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Classic Currents

(1) Tested Philco 6CL6 Tube Date Code 56-27 Sylvania EIA 6CL6 Power Pentode Tube

(1) Tested Philco 6CL6 Tube Date Code 56-27 Sylvania EIA 6CL6 Power Pentode Tube

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(1) Tested Philco 6CL6 Tube.
Date Code 56-27.
The 312 EIA code indicates that this tube was made by Sylvania for Philco.

The wording on the glass is partially worn and faded but still legible.

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

Gm Test = 7000 micromhos
Minimum pass/good = 4200

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