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(1) Tested Silvertone 12A8GT Tube Date Code 01X 12A8 GT Pentagrid Vacuum Tube

(1) Tested Silvertone 12A8GT Tube Date Code 01X 12A8 GT Pentagrid Vacuum Tube

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(1) Tested Silvertone 12A8GT Tube.
Date Code 01X.

The wording on the base is faded and a bit worn but still legible.

This tube tests as NOS.

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

Gm Test = 1375-350 micromhos
Minimum pass/good = 630-190
NOS rating = 945-285

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