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(1) Tested Sylvania 6GU7 Tube with Box Date Code JGE C 6GU7 Vacuum Tube

(1) Tested Sylvania 6GU7 Tube with Box Date Code JGE C 6GU7 Vacuum Tube

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(1) Tested NOS Sylvania 6GU7 Tube with Original Box.
Date Code JGE C.

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:

Gm Test = 1750-1425 micromhos
Minimum pass/good = 1025-1025

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