Please note that this is an EIGHT SN7GTB not a six.
(1) Tested Rauland 8SN7GTB Tube with Original Box.
Date Code 7-26.
The 312 EIA code indicates that this tube was made by Sylvania for Rauland.
Chrome dome envelope flashing with black angled T plates.
Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts or leaks with the following results:
Gm Test = 2875-2750 micromhos
Minimum pass/good = 1650-1650
~ Please view all 8 photos ~
