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Classic Currents

(1) Tested RCA 6CU5 with Box Date Code NF Black Plate Beam Power Pentode Tube

(1) Tested RCA 6CU5 with Box Date Code NF Black Plate Beam Power Pentode Tube

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$7.95 USD
$7.95 USD
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(1) Tested RCA 6CU5 Tube with Original Box.
Date Code NF. Black plate.

The wording is partially worn but still legible.

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

Gm Test = 9500 micromhos
Minimum pass/good = 5650

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