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Classic Currents

(1) Tested Cunningham 6SG7 Tube with Box Date Code 8-04 6SG7 Pentode Tube (a)

(1) Tested Cunningham 6SG7 Tube with Box Date Code 8-04 6SG7 Pentode Tube (a)

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(1) Tested Cunningham 6SG7 Tube with Original Box.
Date Code 8-04.
Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:
Gm Test = 3900 micromhos
Minimum pass/good = 2100

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