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Classic Currents

(1) Tested 1943 RCA JAN 3S4 Tube with Box VT-174 Mil Spec Code K4E Pentode Tube

(1) Tested 1943 RCA JAN 3S4 Tube with Box VT-174 Mil Spec Code K4E Pentode Tube

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(1) Tested 1943 RCA JAN-3S4 VT-174 Mil Spec Tube with Original Box.
Date Code K4E (July to August of 1943).

The box also has a wartime acceptance date of August, 1943. The box has some worn edges and a small bit of writing on the top tab/flap.

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

Gm Test = 1200 micromhos
Minimum pass/good = 940

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