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(1) Tested Strong RCA 6AG7 Tube with Box Date Code 57-22 Black Metal Tube (a)

(1) Tested Strong RCA 6AG7 Tube with Box Date Code 57-22 Black Metal Tube (a)

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$9.95 USD
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(1) Tested Very Strong RCA 6AG7 Tube with Original Box.
Date Code 57-22.

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

Gm Test = 7875 micromhos
Minimum pass/good = 3800

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