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Classic Currents

(1) Tested GE 12SJ7 Tube Red Letters and Box Code 63-22 General Electric Pentode

(1) Tested GE 12SJ7 Tube Red Letters and Box Code 63-22 General Electric Pentode

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(1) Tested GE 12SJ7 Tube with Original Box.
Date Code 63-22.
Box shows edge wear and scuffing overall.

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

Gm Test = 1750 micromhos
Minimum pass/good = 1050

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