(1) Tested RCA 12CU5 12C5 Tube with Original Box.
Date Code L3.
The wording is partially worn off but still recognizable as being RCA branded.
The box shows scuffing in various areas.
Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:
Gm Test = 9825 micromhos
Minimum pass/good = 5650
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