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(1) Tested Strong RCA 25L6 Tube with Box Code 57-13 RCA 25L6 Black Metal Tube

(1) Tested Strong RCA 25L6 Tube with Box Code 57-13 RCA 25L6 Black Metal Tube

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$11.95 USD
$11.95 USD
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(1) Tested Strong RCA 25L6 Tube with Box.
Date Code 57-13.

The box shows various areas of minor staining.

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

Gm Test = 10,250 micromhos
Minimum pass/good = 5650

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