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(1) Tested Sylvania 6SK7GT Tube Date Code M6R 6SK7 Pentode Vacuum Tube

(1) Tested Sylvania 6SK7GT Tube Date Code M6R 6SK7 Pentode Vacuum Tube

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(1) Tested Very Strong Sylvania 6SK7GT Tube.
Date Code M6R.

This tube tests well above NOS.

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

Gm Test = 2375 micromhos
Minimum pass/good = 1260
Average NOS rating = 1890

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