Sylvania Bad Boy 6SN7GT 1950 Rare Low Noise Preamp Tube 3 - Rivet
Item History & Price
| Reference Number: Avaluer:7249554 |
Rare 1950 3 rivet Sylvania 6SN7GT black plate "Bad Boy".Rare first run, 1950 C0M on glass and 039 on base. 95% + of these are from late 51' to early 53'Excellent Sound!! Listening tested in a preamp and Maxi-preamp noise tester for noise and low microphonics.Test @ 2650/3000 where 1640 is min good for gm on a calibrated Hickok 539B. Listening tested for low noise and microphonics.All tubes are guaranteed good or may be returned.Please see our other items for more vintag...e tubes & audio.No 1st class shipping to China, Russia, Oceania and some other countries, email for details.We combine orders for shipping.We don't change values for customs, please don't ask.Thank You.
