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(1) Tested Truetone 6CB6 Tube with Box Blue Letters Japan Code 648 Pentode Tube

(1) Tested Truetone 6CB6 Tube with Box Blue Letters Japan Code 648 Pentode Tube

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$9.95 USD
$9.95 USD
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(1) Tested Truetone 6CB6 Tube with Original Box.
Blue Letters. Date Code 648. Made in Japan.

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

Gm Test = 4250 micromhos
Minimum pass/good = 3500

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