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(1) Tested Sylvania 6CU6 Tube Date Code CB 6CU6 Beam Power Vacuum Tube

(1) Tested Sylvania 6CU6 Tube Date Code CB 6CU6 Beam Power Vacuum Tube

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(1) Tested Sylvania 6CU6 Tube.
Date Code CB.

The tube number is worn off of the glass.

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

Gm Test = 5300 micromhos
Minimum pass/good = 2800

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