(1) Tested Unbranded 12SL7GT Tube.
Manufacturer unknown.
Top halo getter with black rounded plates.
This tube tests above NOS specs.
Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts or leaks with the following results:
Test Result = 1625-1750 micromhos
Minimum pass/good = 1000-1000
NOS Target Value = 1500-1500
~ Please view all 4 photos ~
