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(1) Tested National Union Type 27 Tube with Engraved Base Code J Triode Tube

(1) Tested National Union Type 27 Tube with Engraved Base Code J Triode Tube

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$9.95 USD
$9.95 USD
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(1) Tested National Union Type 27 Tube with Engraved Base.
Date Code J. 

There is some scuffing/scratching on the glass.

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

Gm Test = 950 micromhos
Minimum pass/good = 630

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