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Don't see what you need? Contact us. We have many more tubes that are not yet listed. We also have new and good used tubes in most other numbers including preoctal, globe/balloon, octal, loctal, miniature, subminiature, metal, power, transmitter tubes and many more.

MDB Ventures Audio Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

Notes
1 6BK7B $5.00 RCA 120% / 120% 4800: 4800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 125% / 120% 4600: 4400 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 110% 4800: 4300 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 140% / 140% 5400: 5300 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 130% 4600: 4800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 120% 4400: 4700 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 115% 4200: 4200 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 110% 4400: 4200 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 130% 5000: 5000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 125% 4800: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 120% 5000: 4700 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 130% 4800: 4800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 120% 4200: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 140% 4200: 5400 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 140% / 120% 5000: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 130% 4200: 5000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 120% 4200: 5000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 120% 4800: 4700 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 140% 4800: 5500 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 140% / 120% 5200: 4700 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 120% 5300: 5000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 110% 4700: 4400 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 130% 4800: 5000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 120% 4600: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 120% 4700: 4700 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 120% 4500: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 140% 4800: 5500 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 115% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 110% 4700: 4500 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 110% / 120% 4100: 4400 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 130% 4700: 4900 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 120% 4300: 4400 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 130% 4600: 5000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 120% 4800: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 140% 4800: 5200 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 135% / 130% 5000: 4800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 130% 4700: 4800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 120% / 125% 4500: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 140% / 130% 5200: 4800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 140% / 130% 5800: 5200 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 RCA 130% / 140% 4500: 4700 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5400: 5400 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5600: 6000 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 6500: 6500 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 4800: 5500 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 6750: 6500 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5500: 5500 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5400: 5800 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5800: 5800 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5500: 5700 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 6250: 6750 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 5800: 5800 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 120% 5600: 4500 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 130% / 120% 4800: 4500 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 130% 6250: 5400 / 4000Gm NOS (OB) (M9) white lettering - water damaged box (au64)
1 6BK7B $5.00 GE 120% / 120% 5000: 5000 / 4000Gm NOS (OB) (M9) white lettering (au64)
1 6BK7B $5.00 GE 140% / 140% 6000: 5800 / 4000Gm NOS (OB) (M9) white lettering - water damaged box (au64)
1 6BK7B $5.00 GE 130% / 120% 5800: 5800 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 130% / 130% 5200: 5200 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6000: 6500 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6500: 6500 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 7000: 7000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6500: 6500 / 4000Gm NOS (OB) (M9) red lettering - worn box (au64)
1 6BK7B $5.00 Sylvania 120% / 140% 5400: 6000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 120% / 110% 4600: 4600 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) red lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) yellow lettering (au64)
1 6BK7B $5.00 Sylvania 130% / 140% 6000: 6250 / 4000Gm NOS (OB) (M9) yellow lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) yellow lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 5700: 5800 / 4000Gm NOS (OB) (M9) yellow lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 130% 5200: 5200 / 4000Gm NOS (OB) (M9) yellow lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) yellow lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 6500: 6750 / 4000Gm NOS (OB) (M9) green lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 5100: 5100 / 4000Gm NOS (OB) (M9) green lettering (au64)
1 6BK7B $5.00 Sylvania 140% / 140% 5500: 5600 / 4000Gm NOS (wb) (M9) green lettering (au64)
1 6BK7B $5.00 Westinghouse 130% / 130% 4800: 4900 / 4000Gm NOS (OB) (M9) --- (au64)
1 6BK7B $5.00 Zenith 140% / 140% 6000: 6750 / 4000Gm NOS (OB) (M9) --- (au64)
1 6BK7B $5.00 Zenith 130% / 140% 5500: 5500 / 4000Gm NOS (OB) (M9) --- (au64)
1 6BK7B $5.00 Zenith 140% / 140% 5600: 5600 / 4000Gm NOS (OB) (M9) --- (au64)
1 6BK7B $5.00 Zenith 110% / 120% 4500: 4700 / 4000Gm NOS (OB) (M9) worn box (au64)
1 6BK7B $5.00 Tung-Sol 130% / 140% 5200: 5300 / 4000Gm NOS (OB) (M9) --- (au64)
1 6BK7B $5.00 Tung-Sol 130% / 140% 5000: 5600 / 4000Gm NOS (OB) (M9) torn box flap (au64)
1 6BK7B $5.00 Tung-Sol 130% / 130% 5000: 4800 / 4000Gm NOS (OB) (M9) --- (au64)
1 6BK7B $2.00 RCA 90% / 120% 4100: 4700 / 4000Gm used (ob) (M9) red lettering (au64)
1 6BK7B $2.00 RCA 110% / 90% 4200: 3500 / 4000Gm used (ob) (M9) red lettering (au64)
1 6BK7B $2.00 RCA 120% / 100% 4600: 4000 / 4000Gm used (ob) (M9) red lettering (au64)
1 6BK7B $2.00 RCA 115% / 100% 4000: 3800 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7B $2.00 RCA 140% / 140% 5200: 5400 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7B $2.00 RCA 110% / 140% 5000: 7500 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7B $2.00 GE 140% / 130% 5800: 4800 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7B $2.00 GE 140% / 140% 5600: 6000 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7B $2.00 GE 140% / 140% 5500: 5600 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7B $2.00 GE 140% / 130% 5600: 5000 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 140% / 130% 7500: 6750 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 120% / 130% 5800: 5800 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 120% / 120% 6000: 5800 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 120% / 110% 4600: 4100 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 110% / 110% 4300: 4500 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 90% / 100% 4000: 4800 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 110% / 110% 5400: 5200 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 100% / 105% 3800: 3800 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7B $2.00 GE 130% / 140% 6750: 7000 / 4000Gm used (rb) (M9) red lettering (au64)
1 6BK7B $2.00 Sylvania 100% / 100% 3800: 4400 / 4000Gm used (rb) (M9) red lettering (au64)
1 6BK7B $2.00 Sylvania 130% / 110% 5800: 5400 / 4000Gm used (rb) (M9) yellow lettering (au64)
1 6BK7B $2.00 Sylvania 110% / 110% 5400: 5400 / 4000Gm used (rb) (M9) yellow lettering (au64)
1 6BK7B $2.00 Zenith 120% / 100% 5300: 4600 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7B $2.00 Zenith 110% / 130% 4500: 4600 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7B $2.00 Realistic 115% / 115% 5200: 5000 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7B $2.00 Tung-Sol 110% / 110% 4900: 4900 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7B $2.00 GE 90% / 110% 4900: 5200 / 4000Gm used (L) (M9) white lettering (au64)
1 6BK7B $2.00 RCA 100% / 90% 5400: 3800 / 4000Gm used (L) (M9) red lettering (au64)
1 6BK7B $2.00 Westinghouse 105% / 140% 4800: 6000 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 130% / 130% 5000: 5000 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 100% / 100% 4200: 4000 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 110% / 100% 4300: 3700 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 105% / 130% 3800: 4800 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 110% / 110% 3900: 4200 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 100% / 110% 4400: 4400 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 140% / 110% 5600: 4600 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 140% / 140% 5700: 6000 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 120% / 110% 4800: 4400 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 120% / 115% 4800: 4800 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 120% / 130% 4800: 4900 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 130% / 140% 5400: 5600 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 120% / 115% 5100: 5000 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 110% / 120% 4800: 4800 / 4000Gm used (L) (M9) --- (au64)
1 6BK7B $2.00 unknown 90% / 90% 3600: 3500 / 4000Gm used (L) (M9) --- (au64)
1 6BK7A $2.00 Zenith 140% / 140% 5500: 6500 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7A $2.00 RCA 140% / 140% 5500: 5500 / 4000Gm used (rb) (M9) white lettering (au64)
1 6BK7A $2.00 Sylvania 130% / 140% 5200: 5800 / 4000Gm used (rb) (M9) yellow lettering (au64)
1 6BK7A $2.00 Sylvania 130% / 140% 6000: 6000 / 4000Gm used (rb) (M9) green lettering (au64)
1 6BK7A $2.00 Tru-Vac 95% / 90% 4400: 4000 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7A $2.00 GE 110% / 110% 5000: 5000 / 4000Gm used (ob) (M9) white lettering (au64)
1 6BK7A $2.00 Sylvania 100% / 90% 4600: 4400 / 4000Gm used (L) (M9) yellow lettering (au64)
1 6BK7A $2.00 unknown 140% / 140% 5200: 5600 / 4000Gm used (L) (M9) --- (au64)
1 6BK7A $2.00 unknown 100% / 90% 4600: 4400 / 4000Gm used (L) (M9) --- (au64)
1 6BK7A $2.00 unknown 100% / 100% 4400: 4400 / 4000Gm used (L) (M9) --- (au64)
1 6BK7A $2.00 unknown 110% / 110% 4200: 4600 / 4000Gm used (L) (M9) --- (au64)
1 6BK7A $2.00 unknown 90% / 90% 3600: 3600 / 4000Gm used (L) (M9) --- (au64)
1 6BK7 $2.00 Standard 100% / 110% 3600: 3900 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7 $2.00 Raytheon 110% / 120% 5400: 5600 / 4000Gm used (rb) (M9) --- (au64)
1 6BK7 $2.00 Raytheon 100% / 90% 4500: 3800 / 4000Gm used (L) (M9) --- (au64)
1 5BQ7A $3.00 RCA 110% / 120% 5000: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 5BQ7A $3.00 Raytheon 110% / 110% 4800: 4800 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Mullard 110% / 110% 4800: 4800 / 4000Gm NOS (OB) (M9) England
1 6BQ7A $5.00 Mullard 110% / 120% 4500: 5000 / 4000Gm NOS (OB) (M9) England
1 6BQ7A $5.00 Mullard 130% / 120% 5400: 5200 / 4000Gm NOS (OB) (M9) England
1 6BQ7A $5.00 Sylvania 110% / 110% 5200: 5400 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 140% / 130% 5800: 5400 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 130% / 120% 5000: 4800 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 110% 5000: 4800 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 135% / 130% 5000: 4900 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 130% / 110% 5100: 4800 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 110% 4800: 4600 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 140% / 140% 5400: 5600 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 130% / 110% 5100: 4500 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 115% / 115% 4800: 4700 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 120% 5400: 5800 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 110% / 120% 4500: 4600 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 110% 5200: 4800 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 120% 5200: 4800 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 120% 4800: 4900 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 120% 4500: 4500 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 130% / 120% 5000: 5000 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 110% 4800: 4600 / 4000Gm NOS (OB) (M9) green lettering - JAN
1 6BQ7A $5.00 Sylvania 120% / 120% 6500: 6500 / 4000Gm NOS (OB) (M9) green lettering
1 6BQ7A $5.00 Sylvania 115% / 115% 6500: 6000 / 4000Gm NOS (OB) (M9) green lettering
1 6BQ7A $5.00 Sylvania 110% / 110% 6500: 6000 / 4000Gm NOS (OB) (M9) green lettering
1 6BQ7A $5.00 Sylvania 120% / 140% 6500: 6500 / 4000Gm NOS (OB) (M9) green lettering
1 6BQ7A $5.00 Sylvania 120% / 120% 6500: 6000 / 4000Gm NOS (OB) (M9) green lettering
1 6BQ7A $5.00 Sylvania 120% / 140% 4900: 5400 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BQ7A $5.00 Westinghouse 110% / 110% 6000: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Westinghouse 140% / 120% 5400: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Westinghouse 110% / 115% 4600: 4600 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 RCA 130% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 RCA 140% / 140% 6000: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 RCA 140% / 140% 5800: 5800 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 RCA 140% / 140% 5200: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 RCA 120% / 140% 4800: 5400 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 RCA 135% / 125% 5000: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 RCA 120% / 140% 5000: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A $5.00 GE 125% / 120% 4800: 4500 / 4000Gm NOS (OB) (M9) white lettering
1 6BQ7A $5.00 Tung-Sol 110% / 120% 4400: 5000 / 4000Gm NOS (OB) (M9) torn box flap
1 6BQ7A $5.00 Wards Super Airline 140% / 140% 5300: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Raytheon 140% / 140% 6500: 6500 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Raytheon 140% / 140% 6000: 6500 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Raytheon 140% / 140% 7500: 6500 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Raytheon 130% / 140% 5000: 5600 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Raytheon 120% / 110% 4700: 4200 / 4000Gm NOS (OB) (M9) japan
1 6BQ7A $5.00 ITT 140% / 140% 5600: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 130% / 130% 5500: 5800 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 130% / 140% 5800: 5400 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 130% / 140% 5700: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 110% / 130% 5000: 5400 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 120% / 130% 5000: 5600 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 130% / 130% 5500: 5500 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 ITT 125% / 140% 5200: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Motorola 140% / 140% 4700: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Motorola 140% / 140% 7000: 7000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Motorola 120% / 130% 4800: 4800 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Motorola 140% / 140% 5500: 5800 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $5.00 Motorola 110% / 130% 4600: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A $2.00 Sylvania 110% / 110% 3600: 5000 / 4000Gm used (ob) (M9) green lettering - JAN
1 6BQ7A $2.00 Sylvania 130% / 120% 5000: 4700 / 4000Gm used (ob) (M9) green lettering
1 6BQ7A $2.00 Sylvania 130% / 110% 5000: 4400 / 4000Gm used (ob) (M9) green lettering
1 6BQ7A $2.00 Sylvania 140% / 140% 5400: 5800 / 4000Gm used (ob) (M9) green lettering
1 6BQ7A $2.00 Sylvania 110% / 110% 3900: 3800 / 4000Gm used (wb) (M9) green lettering
1 6BQ7A $2.00 Sylvania 110% / 100% 6000: 5500 / 4000Gm used (ob) (M9) green lettering
1 6BQ7A $2.00 Sylvania 100% / 100% 5500: 5500 / 4000Gm used (ob) (M9) green lettering
1 6BQ7A $2.00 Sylvania 100% / 100% 3500: 3600 / 4000Gm used (ob) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 110% / 140% 5000: 5600 / 4000Gm used (ob) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 140% / 120% 5400: 5200 / 4000Gm used (ob) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 130% / 140% 5000: 5400 / 4000Gm used (ob) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 125% / 120% 4800: 4800 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 Sylvania 110% / 120% 4200: 4400 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 GE 100% / 100% 3700: 3600 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A $2.00 GE 110% / 110% 4000: 4000 / 4000Gm used (ob) (M9) white lettering
1 6BQ7A $2.00 Tung-Sol 120% / 110% 4400: 4300 / 4000Gm used (ob) (M9) ---
1 6BQ7A $2.00 Tung-Sol 130% / 110% 6500: 7000 / 4000Gm used (wb) (M9) ---
1 6BQ7A $2.00 RCA 100% / 140% 4800: 5800 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 RCA 110% / 120% 4500: 4700 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 RCA 140% / 130% 6000: 5600 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 RCA 125% / 140% 5000: 5300 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 RCA 100% / 100% 5100: 5000 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A $2.00 RCA 100% / 100% 4000: 4200 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A $2.00 RCA 100% / 100% 4000: 4000 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A $2.00 RCA 100% / 100% 3800: 3900 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A $2.00 RCA 130% / 140% 5000: 5200 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A $2.00 Raytheon 130% / 125% 5000: 5000 / 4000Gm used (rb) (M9) ---
1 6BQ7A $2.00 Raytheon 140% / 130% 7000: 7000 / 4000Gm used (rb) (M9) ---
1 6BQ7A $2.00 Shield 120% / 120% 4400: 4800 / 4000Gm used (rb) (M9) ---
1 6BQ7A $2.00 Deforest 120% / 110% 4600: 4200 / 4000Gm used (rb) (M9) ---
1 6BQ7A $2.00 BT Labs 125% / 90% 4500: 3800 / 4000Gm used (rb) (M9) ---
1 6BQ7A $2.00 BT Labs 115% / 120% 4600: 4800 / 4000Gm used (rb) (M9) ---
1 6BQ7A $2.00 RCA 115% / 105% 4000: 4000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 115% / 100% 3700: 3700 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 130% / 130% 4800: 4800 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 110% / 90% 4000: 3900 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 100% / 125% 4300: 5000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 130% / 130% 4600: 4600 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 110% / 110% 4000: 4000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 130% / 110% 5000: 3800 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 120% / 140% 4400: 4400 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 110% / 120% 3800: 4000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 90% / 110% 4000: 4300 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 140% / 130% 4800: 4500 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 90% / 90% 3600: 3800 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 95% / 120% 4300: 5800 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 140% / 140% 5800: 5000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 120% / 120% 4600: 4600 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 130% / 140% 4800: 5000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 120% / 140% 4300: 5000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 90% / 90% 3600: 4000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 140% / 140% 7250: 7250 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 90% / 130% 4400: 4800 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 110% / 110% 3500: 3500 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 RCA 120% / 120% 4600: 4600 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 140% / 140% 5200: 6000 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 100% / 120% 3800: 4200 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 120% / 110% 3800: 3700 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 140% / 140% 5200: 5200 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 140% / 140% 7000: 7250 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 130% / 140% 4000: 4800 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 130% / 140% 5400: 5700 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 110% / 120% 4000: 4000 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 100% / 120% 3600: 4800 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 RCA 120% / 120% 4600: 4600 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 110% / 110% 4000: 3800 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 GE 130% / 130% 4700: 4800 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 120% / 120% 4000: 4100 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 130% / 120% 4300: 4200 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 110% / 120% 3800: 4300 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 95% / 100% 3200: 3600 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 140% / 140% 5200: 5000 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 110% / 100% 3800: 3600 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 140% / 130% 4800: 4800 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 125 / 105% 4000: 3600 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 120% / 100% 4600: 4200 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 GE 100% / 110% 3600: 3700 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 110% / 105% 3800: 3800 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 115% / 120% 4200: 4400 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 100% / 100% 3600: 3700 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 120% / 110% 3800: 3800 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 130% / 130% 4500: 4500 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 120% / 120% 4000: 4000 / 4000Gm used (L) (M9) white lettering
1 6BQ7A $2.00 GE 110% / 100% 4000: 3600 / 4000Gm used (L) (M9) red lettering
1 6BQ7A $2.00 Sylvania 100% / 100% 3800: 3800 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 125% / 120% 4200: 4000 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 110% / 110% 3900: 3800 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 100% / 110% 3600: 4000 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 130% / 140% 4300: 4600 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 120% / 110% 3800: 3700 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 110% / 100% 4300: 4200 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 120% / 100% 4400: 4000 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 130% / 110% 5000: 3700 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 110% / 120% 4300: 4800 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 110% / 130% 3800: 4200 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A $2.00 Sylvania 140% / 140% 5000: 4800 / 4000Gm used (L) (M9) green lettering
1 6BQ7A $2.00 Sylvania 120% / 110% 4600: 4100 / 4000Gm used (L) (M9) green lettering
1 6BQ7A $2.00 Sylvania 140% / 140% 4700: 5200 / 4000Gm used (L) (M9) green lettering
1 6BQ7A $2.00 Sylvania 130% / 140% 5400: 5500 / 4000Gm used (L) (M9) green lettering
1 6BQ7A $2.00 Raytheon 130% / 125% 5400: 4200 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 140% / 140% 5000: 5000 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 140% / 140% 5000: 4400 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 110% / 130% 4000: 4400 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 120% / 130% 4000: 4000 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 140% / 140% 7000: 7750 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 100% / 100% 3800: 3600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 140% / 140% 5000: 5000 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 130% / 140% 4800: 5800 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Raytheon 140% / 140% 8000: 5600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Tung-Sol 140% / 120% 5200: 4400 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Tung-Sol 110% / 110% 4000: 3600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Tung-Sol 110% / 120% 3800: 3800 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Tung-Sol 140% / 140% 6000: 5500 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Hewlett Packard 110% / 120% 4200: 4400 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Hewlett Packard 130% / 140% 4800: 4900 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Hewlett Packard 110% / 130% 3600: 4200 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Hewlett Packard 90% / 95% 3800: 3800 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Hewlett Packard 110% / 110% 4800: 4200 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Philco 140% / 140% 5000: 4800 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Silvertone 110% / 110% 4000: 4000 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Silvertone 120% / 120% 4400: 4700 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Triad 110% / 120% 3800: 4400 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Curtis Mathis 130% / 140% 4100: 4600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Standard 120% / 130% 4400: 4600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Fisher 110% / 140% 3700: 4600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Rogers 140% / 140% 6750: 7750 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Zenith 100% / 130% 3800: 4600 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Westinghouse 140% / 130% 5700: 5800 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Channel Master 120% / 130% 5300: 5400 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 Sonotone 130% / 130% 4000: 4500 / 4000Gm used (L) (M9) ---
1 6BQ7A $2.00 unknown 100% / 110% 3600: 4000 / 4000Gm used (L) (M9) ---
1 6BZ7 $5.00 RCA 140% / 140% 6500: 7000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ7 $5.00 RCA 140% / 130% 5400: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ7 $5.00 RCA 140% / 130% 6000: 4500 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ7 $5.00 Sylvania 130% / 130% 5400: 5200 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BZ7 $5.00 Raytheon 120% / 120% 5000: 5200 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Raytheon 140% / 130% 5800: 5600 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Raytheon 140% / 140% 5400: 5600 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Raytheon 110% / 115% 4300: 4700 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Raytheon 110% / 110% 4600: 4400 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Raytheon 140% / 140% 5200: 6000 / 4000Gm NOS (OB) (M9) torn box flap
1 6BZ7 $5.00 Tung-Sol 140% / 140% 6500: 6500 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Tung-Sol 110% / 120% 4800: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Tung-Sol 140% / 140% 6500: 7000 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Tung-Sol 140% / 140% 5300: 5900 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Tung-Sol 120% / 110% 4900: 4600 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Westinghouse 130% / 130% 5000: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Westinghouse 140% / 130% 5800: 5300 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Westinghouse 140% / 130% 5800: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $5.00 Rad-Tel 130% / 140% 5200: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BZ7 $2.00 RCA 140% / 140% 6250: 7250 / 4000Gm used (ob) (M9) red lettering
1 6BZ7 $2.00 GE 100% / 120% 4000: 4600 / 4000Gm used (rb) (M9) white lettering
1 6BZ7 $2.00 Westinghouse 140% / 140% 6250: 7000 / 4000Gm used (rb) (M9) ---
1 6BZ7 $2.00 Raytheon 120% / 120% 4800: 4800 / 4000Gm used (rb) (M9) ---
1 6BZ7 $2.00 RCA 100% / 140% 4000: 5600 / 4000Gm used (ob) (M9) red lettering
1 6BZ7 $2.00 GE 110% / 110% 4700: 5000 / 4000Gm used (rb) (M9) white lettering
1 6BZ7 $2.00 RCA 120% / 110% 4600: 4000 / 4000Gm used (ob) (M9) white lettering
1 6BZ7 $2.00 GM / Delco 100% / 100% 4000: 3700 / 4000Gm used (rb) (M9) ---
1 6BZ7 $2.00 General Instrument 110% / 110% 4500: 4500 / 4000Gm used (rb) (M9) ---
1 6BZ7 $2.00 Raytheon 120% / 140% 4800: 5500 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 RCA 90% / 130% 4400: 6000 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 Raytheon 140% / 130% 5000: 5500 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Raytheon 120% / 110% 4000: 4300 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Raytheon 130% / 130% 4700: 4800 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Raytheon 140% / 120% 5000: 4800 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Raytheon 140% / 140% 6000: 5800 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Raytheon 110% / 100% 4300: 4200 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 GE 100% / 110% 4800: 4200 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 GE 110% / 110% 4200: 4200 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 GE 100% / 110% 3900: 4000 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 GE 100% / 100% 4300: 4000 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 GE 110% / 110% 4100: 3900 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 GE 110% / 100% 4100: 4000 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 GE 100% / 90% 3600: 3000 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 GE 100% / 100% 3800: 3900 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 GE 120% / 120% 4600: 4700 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 RCA 130% / 140% 5400: 5400 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 RCA 120% / 100% 5400: 4000 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 RCA 90% / 120% 4000: 5800 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 RCA 100% / 90% 5800: 3200 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 RCA 110% / 100% 5000: 4800 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 RCA 120% / 130% 5000: 5200 / 4000Gm used (L) (M9) white lettering
1 6BZ7 $2.00 RCA 110% / 100% 5200: 5000 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 Sylvania 100% / 90% 3400: 3800 / 4000Gm used (L) (M9) red lettering
1 6BZ7 $2.00 Sylvania 100% / 110% 4000: 4200 / 4000Gm used (L) (M9) yellow lettering
1 6BZ7 $2.00 Sylvania 100% / 100% 4200: 4000 / 4000Gm used (L) (M9) yellow lettering
1 6BZ7 $2.00 Sylvania 140% / 120% 5200: 5000 / 4000Gm used (L) (M9) yellow lettering
1 6BZ7 $2.00 Sylvania 130% / 120% 4500: 4200 / 4000Gm used (L) (M9) yellow lettering
1 6BZ7 $2.00 Tung-Sol 100% / 120% 3500: 4400 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Tung-Sol 120% / 110% 4800: 4700 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Philco 110% / 90% 4600: 3600 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Philco 90% / 100% 3600: 3600 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Westinghouse 120% / 120% 4000: 4100 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Westinghouse 140% / 140% 3600: 5500 / 4000Gm used (L) (M9) ---
1 6BZ7 $2.00 Motorola 110% / 110% 4000: 4100 / 4000Gm used (L) (M9) ---
1 6BQ7A / 6BZ7 $5.00 RCA 140% / 140% 6500: 6750 / 4000Gm NOS (OB) (M9) white lettering
1 6BQ7A / 6BZ7 $5.00 GE 140% / 130% 5000: 5000 / 4000Gm NOS (OB) (M9) white lettering
1 6BQ7A / 6BZ7 $5.00 GE 120% / 120% 4600: 4600 / 4000Gm NOS (wb) (M9) white lettering
1 6BQ7A / 6BZ7 $5.00 Sylvania 140% / 140% 5400: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BZ7 $5.00 Sylvania 130% / 130% 4500: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BZ7 $5.00 Sylvania 140% / 140% 5800: 5400 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BZ7 $5.00 ITT 130% / 140% 4800: 5100 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A / 6BZ7 $5.00 Raytheon 140% / 130% 5800: 5400 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A / 6BZ7 $5.00 Amperex 110% / 130% 4600: 5200 / 4000Gm NOS (OB) (M9) world logo
1 6BQ7A / 6BZ7 $5.00 Amperex 130% / 110% 5000: 4700 / 4000Gm NOS (OB) (M9) world logo
1 6BQ7A / 6BZ7 $5.00 Amperex 120% / 110% 4700: 4600 / 4000Gm NOS (OB) (M9) world logo
1 6BQ7A / 6BZ7 $5.00 Amperex 120% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) world logo
1 6BQ7A / 6BZ7 $2.00 GE 120% / 140% 4800: 5400 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A / 6BZ7 $2.00 GE 140% / 120% 5000: 4600 / 4000Gm used (rb) (M9) white lettering
1 6BQ7A / 6BZ7 $2.00 RCA 140% / 120% 5400: 4200 / 4000Gm used (rb) (M9) red lettering - canada
1 6BQ7A / 6BZ7 $2.00 Sylvania 110% / 140% 3600: 4800 / 4000Gm used (rb) (M9) yellow lettering
1 6BQ7A / 6BZ7 $2.00 Sylvania 140% / 140% 5200: 5800 / 4000Gm used (rb) (M9) red lettering
1 6BQ7A / 6BZ7 $2.00 Sylvania 120% / 140% 4300: 4900 / 4000Gm used (L) (M9) yellow lettering
1 6BQ7A / 6BZ7 $2.00 Sylvania 140% / 140% 5800: 5600 / 4000Gm used (L) (M9) red lettering
1 6BQ7A / 6BZ7 $2.00 Sylvania 90% / 120% 3000: 4000 / 4000Gm used (L) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 Triad 140% / 140% 5000: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 140% / 140% 5800: 5800 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 140% / 130% 6000: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 130% / 140% 5000: 6000 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 140% / 120% 5800: 4600 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 120% / 140% 4800: 5600 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BC8 / 6BZ7 $5.00 RCA 130% / 130% 4300: 4600 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 130% / 125% 5000: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 140% / 140% 5000: 5300 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 140% / 140% 6250: 7000 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $5.00 RCA 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $2.00 RCA 110% / 110% 4400: 4000 / 4000Gm used (ob) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $2.00 RCA 140% / 100% 5600: 4800 / 4000Gm used (ob) (M9) red lettering
1 6BQ7A / 6BS8 / 6BZ7 $2.00 Sylvania 120% / 140% 4300: 4900 / 4000Gm used (L) (M9) yellow lettering
1 6BS8 $5.00 RCA 120% / 140% 4900: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 140% / 140% 5600: 5800 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 140% / 140% 5600: 5800 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 140% / 140% 7000: 7000 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 140% / 140% 5800: 5800 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 130% / 140% 6250: 7000 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 130% / 140% 4900: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 140% / 130% 7000: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 120% / 140% 5200: 7000 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 RCA 115% / 140% 4500: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BS8 $5.00 GE 130% / 140% 5300: 5700 / 4000Gm NOS (OB) (M9) white lettering
1 6BS8 $5.00 Philco 130% / 120% 4800: 4800 / 4000Gm NOS (OB) (M9) ---
1 6BS8 $5.00 Philco 135% / 135% 5200: 5200 / 4000Gm NOS (OB) (M9) ---
1 6BS8 $5.00 Philco 140% / 130% 5500: 5200 / 4000Gm NOS (OB) (M9) ---
1 6BS8 $5.00 CBS 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BS8 $5.00 Westinghouse 140% / 140% 5800: 5800 / 4000Gm NOS (OB) (M9) ---
1 6BS8 $5.00 Rad-Tel 110% / 125% 4200: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BS8 $2.00 RCA 140% / 140% 5500: 5500 / 4000Gm used (ob) (M9) red lettering
1 6BS8 $2.00 GE 120% / 120% 5000: 4800 / 4000Gm used (ob) (M9) white lettering
1 6BS8 $2.00 Sylvania 120% / 100% 4600: 3800 / 4000Gm used (L) (M9) yellow lettering
1 6BS8 $2.00 unknown 100% / 100% 3800: 3600 / 4000Gm used (L) (M9) ---
1 6BC8 $5.00 RCA 120% / 130% 4400: 4500 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 110% / 125% 4400: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 6500: 6250 / 4000Gm NOS (OB) (M9) red lettering - worn box
1 6BC8 $5.00 RCA 140% / 130% 4600: 4300 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 6000: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 5000: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 130% / 140% 4700: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 4600: 5200 / 4000Gm NOS (OB) (M9) red lettering - worn box
1 6BC8 $5.00 RCA 140% / 140% 5400: 5600 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 110% / 130% 4200: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 110% / 140% 4200: 4700 / 4000Gm NOS (OB) (M9) red lettering - worn box
1 6BC8 $5.00 RCA 130% / 135% 4600: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 4600: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 4600: 4900 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 130% / 120% 4400: 4200 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 140% 4700: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 120% / 130% 4400: 4600 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 125% / 125% 4400: 4300 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 110% / 115% 4250: 4500 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 RCA 140% / 130% 4700: 5000 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 RCA 130% / 140% 5700: 5800 / 4000Gm NOS (OB) (M9) white lettering - missing box flap
1 6BC8 $5.00 RCA 140% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) white lettering - missing box flap
1 6BC8 $5.00 GE 140% / 140% 5200: 5800 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 140% / 140% 4800: 5100 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 140% / 140% 5400: 5400 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 140% / 135% 4900: 4900 / 4000Gm NOS (OB) (M9) white lettering - damaged box
1 6BC8 $5.00 GE 140% / 130% 5000: 4600 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 130% / 130% 5200: 5000 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 130% / 115% 4750: 4400 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 120% / 120% 4600: 4600 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 120% / 125% 4200: 4200 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 120% / 110% 4800: 4500 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 GE 110% / 130% 4400: 4700 / 4000Gm NOS (OB) (M9) white lettering
1 6BC8 $5.00 Sylvania 140% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BC8 $5.00 Sylvania 140% / 140% 5600: 6000 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BC8 $5.00 Sylvania 140% / 120% 4600: 5400 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BC8 $5.00 Sylvania 130% / 130% 5000: 4800 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BC8 $5.00 Sylvania 120% / 135% 4700: 4800 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BC8 $5.00 Sylvania 140% / 140% 7000: 5600 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 Sylvania 140% / 130% 5500: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 Sylvania 115% / 115% 4600: 4400 / 4000Gm NOS (OB) (M9) red lettering
1 6BC8 $5.00 Zenith 140% / 130% 4400: 4400 / 4000Gm NOS (OB) (M9) worn box
1 6BC8 $5.00 ITT 130% / 120% 4500: 4300 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $5.00 Westinghouse 140% / 120% 6250: 4500 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Philco 140% / 140% 5800: 5200 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Rauland 140% / 140% 5600: 5600 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 CBS 120% / 120% 5400: 4500 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Wards Super Airline 140% / 140% 4800: 5700 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Wards Super Airline 140% / 140% 4900: 4900 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Wards Super Airline 140% / 140% 5300: 5800 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Tung-Sol 120% / 125% 4600: 4900 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Tung-Sol 115% / 120% 4100: 4100 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Raytheon 140% / 140% 7500: 6000 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Raytheon 130% / 120% 4900: 4600 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Raytheon 140% / 120% 5000: 4600 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Raytheon 110% / 130% 4200: 4400 / 4000Gm NOS (OB) (M9) ---
1 6BC8 $5.00 Raytheon 140% / 140% 5000: 5300 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $5.00 Raytheon 140% / 140% 5000: 4900 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $5.00 Raytheon 140% / 140% 5000: 5600 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $5.00 Raytheon 140% / 140% 5800: 6000 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $5.00 Raytheon 140% / 140% 4800: 5200 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $5.00 Raytheon 130% / 140% 5000: 5400 / 4000Gm NOS (OB) (M9) japan
1 6BC8 $2.00 RCA 130% / 120% 4200: 3800 / 4000Gm used (OB) (M9) red lettering
1 6BC8 $2.00 RCA 125% / 110% 4600: 4000 / 4000Gm used (OB) (M9) red lettering
1 6BC8 $2.00 Sylvania 110% / 110% 4400: 4600 / 4000Gm used (OB) (M9) yellow lettering
1 6BC8 $2.00 Tung-Sol 110% / 130% 4800: 5300 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Tung-Sol 110% / 115% 4400: 4600 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Tung-Sol 130% / 130% 5200: 5000 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Motorola 120% / 130% 4800: 5200 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Motorola 110% / 100% 4600: 4500 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Motorola 120% / 120% 4000: 4100 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 CEI 120% / 110% 5200: 4500 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Philco 120% / 130% 4800: 5700 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 Raytheon 110% / 140% 4800: 7000 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 unknown 90% / 90% 4000: 3900 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 unknown 120% / 100% 4600: 4300 / 4000Gm used (OB) (M9) ---
1 6BC8 $2.00 RCA 90% / 140% 3700: 5600 / 4000Gm used (L) (M9) red lettering
1 6BC8 $2.00 RCA 120% / 90% 4800: 4000 / 4000Gm used (L) (M9) red lettering
1 6BC8 $2.00 RCA 100% / 110% 4200: 4000 / 4000Gm used (L) (M9) white lettering
1 6BC8 $2.00 unknown 90% / 90% 3500: 3500 / 4000Gm used (L) (M9) ---
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5000: 5500 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5400: 5900 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5400: 5600 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5000: 5600 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5200: 5400 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5500: 5400 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5200: 5700 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5400: 5400 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5000: 5000 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5500: 5900 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5300: 5500 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 140% 5400: 5000 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 130% 5800: 5600 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 100% 5200: 4000 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 135% 5200: 4900 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 120% 5200: 4700 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 140% / 130% 5400: 4800 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 120% / 140% 4500: 5200 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 110% / 140% 5200: 5600 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 135% / 130% 4800: 4800 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 130% / 130% 5000: 4800 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 130% / 130% 4800: 4900 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 130% / 130% 5200: 4600 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 135% / 130% 4800: 4800 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Amperex 130% / 120% 5000: 4800 / 4000Gm NOS (OB) (M9) world logo
1 6BC8 / 6BZ8 $5.00 Sylvania 130% / 120% 4600: 4400 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BC8 / 6BZ8 $5.00 GE 140% / 120% 4600: 4400 / 4000Gm NOS (OB) (M9) white lettering
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 140% 5500: 5500 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 140% 5400: 5600 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 140% 5300: 6250 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 140% 4900: 5800 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 140% 6500: 7000 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 140% 7250: 7250 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 125% 5000: 4400 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 130% / 140% 4700: 5300 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 120% / 140% 4200: 5000 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 110% / 120% 4200: 4300 / 4000Gm NOS (OB) (M9) red lettering - canada
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 120% 5000: 4600 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 / 6BZ8 $5.00 RCA 150% / 140% 6500: 6000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 / 6BZ8 $5.00 RCA 140% / 120% 5600: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 / 6BZ8 $2.00 RCA 110% / 110% 4000: 3900 / 4000Gm used (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 140% 5200: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 140% 4600: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 140% 6500: 6750 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 140% 6000: 6500 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 140% 5200: 5400 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 130% 4900: 4900 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 130% 4700: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 130% 4900: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 130% 5000: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 130% 4800: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 140% 5000: 5800 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 130% 5300: 5100 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 120% / 140% 4700: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 120% / 140% 4600: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 120% / 140% 5200: 5800 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 140% / 125% 5200: 4800 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 110% 4900: 4400 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 120% 5200: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 125% / 130% 4800: 5000 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 130% / 110% 5200: 4700 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 120% / 130% 4800: 5100 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 120% / 120% 4500: 4500 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 115% / 125% 4400: 4600 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 115% / 110% 4500: 4400 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 RCA 110% / 115% 4400: 4400 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 $5.00 GE 130% / 130% 4800: 5000 / 4000Gm NOS (OB) (M9) white lettering
1 6BZ8 $5.00 GE 140% / 140% 6000: 5600 / 4000Gm NOS (OB) (M9) white lettering
1 6BZ8 $5.00 GE 130% / 140% 5200: 6250 / 4000Gm NOS (OB) (M9) white lettering
1 6BZ8 $5.00 Sylvania 130% / 130% 4600: 5000 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BZ8 $5.00 Sylvania 140% / 140% 5000: 5300 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BZ8 $5.00 Sylvania 120% / 140% 4600: 5200 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BZ8 $5.00 Sylvania 120% / 120% 4400: 5000 / 4000Gm NOS (OB) (M9) yellow lettering
1 6BZ8 $5.00 Arcturus 130% / 120% 4600: 4400 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 $5.00 Arcturus 140% / 130% 5000: 4400 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 $5.00 Motorola 120% / 120% 4500: 4600 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 $2.00 Sylvania 140% / 140% 5400: 5400 / 4000Gm used (ob) (M9) yellow lettering
1 6BZ8 $2.00 unknown 140% / 120% 5000: 4500 / 4000Gm used (ob) (M9) ---
1 6BZ8 / X155 $5.00 Philco 130% / 130% 4600: 4400 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Philco 140% / 140% 5000: 5500 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Raytheon 140% / 140% 4800: 5100 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Raytheon 140% / 140% 4800: 4900 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Raytheon 125% / 140% 4500: 4900 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Raytheon 130% / 120% 5200: 5000 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Raytheon 120% / 130% 4600: 4800 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 Raytheon 120% / 125% 4600: 4400 / 4000Gm NOS (OB) (M9) ---
1 6BZ8 / X155 $5.00 RCA 140% / 140% 5600: 5200 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 / X155 $5.00 RCA 140% / 130% 5400: 5400 / 4000Gm NOS (OB) (M9) red lettering
1 6BZ8 / X155 $2.00 GE 130% / 140% 5000: 5400 / 4000Gm used (ob) (M9) white lettering
1 6BZ8 / X155 $2.00 Sylvania 140% / 120% 5000: 4600 / 4000Gm used (ob) (M9) yellow lettering
1 6BZ8 / X155 $2.00 Sylvania 130% / 140% 5000: 5000 / 4000Gm used (L) (M9) yellow lettering
1 6BZ8 / X155 $2.00 Raytheon 120% / 140% 4500: 4700 / 4000Gm used (L) (M9) ---
1 6BZ8 / X155 $2.00 unknown 140% / 140% 5200: 5300 / 4000Gm used (rb) (M9) ---
1 6BZ8 / X155 $2.00 RCA 95% / 110% 3700: 4200 / 4000Gm used (rb) (M9) red lettering

Notes:
(OB) = original box, (rb) = relabeled/replacement box, (wb) = white box, (L) = loose (no box), (pl) = paper label on tube (original or third party)
(H) = tested on Hickok 539A
(ST)=ST Style, (GT)=GT Style, (TT)=Tall Tubular, (M7)=7pin miniature, M9=9pin miniature, (SM)=subminiature, JAN = Military
Emission Strength = Percentage of emission measured on Eico 666 tube tester
(Emission Strength = 100% baseline reference, >80%:good, >60%:fair >40%=diode good).
Gm = Mutual conductance measured on Hickok 533 tube tester; Except (H)=tested on Hickok 539A
(Gm = measured/baseline, measured1:measured2/baseline, measured1:measured2/baseline1:baseline2).


How To Order:

Purchasing our audio tubes is easy.
Just send us an email indicating the tubes (including quantities) you want.
We will let you know the total price including shipping and handling.

Shipping and Handling Information

Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com

Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.


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Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com