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(1) Tested Tung Sol 5U8 Tube with Box Date Code NC1 Triode Pentode Vacuum Tube

(1) Tested Tung Sol 5U8 Tube with Box Date Code NC1 Triode Pentode Vacuum Tube

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(1) Tested Tung Sol 5U8 Tube with Original Box.
Date Code NC1.

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

Gm Test = 2850-4750 micromhos
Minimum pass/good = 1420-2840

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