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Classic Currents

(1) Tested 1961 RCA 6BC4 Tube with Box Date Code 61-13 Medium Mu Triode Tube

(1) Tested 1961 RCA 6BC4 Tube with Box Date Code 61-13 Medium Mu Triode Tube

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(1) Tested 1961 RCA 6BC4 Tube with Original Box.
Date Code 61-13.

The box has a packaged date of 3-61 (March, 1961)
The box has a slight dent/crease in one panel and a small bit of writing - see photos.

This tube tests as NOS.

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

Gm Test = 10,500 micromhos
Minimum pass/good = 6100
Average NOS rating = 9150

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