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(1) Tested Admiral 5BK7A Tube with Box Code 60-26 GE EIA 5BK7 A Dual Triode (c)

(1) Tested Admiral 5BK7A Tube with Box Code 60-26 GE EIA 5BK7 A Dual Triode (c)

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(1) Tested Very Strong Admiral 5BK7A Tube with Original Box.
Date Code 60-26.
The 188 EIA code indicates that this tube was made by GE for Admiral.

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

Gm Test = 10,250-11,000 micromhos
Minimum pass/good = 5350-5350

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