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(1) Tested Silvertone Type 58 Tube Date Code 49X Remote Cutoff Pentode Tube

(1) Tested Silvertone Type 58 Tube Date Code 49X Remote Cutoff Pentode Tube

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(1) Tested Silvertone Type 58 Engraved Base Tube.
Date Code 49X.

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

Gm Test = 1750 micromhos
Minimum pass/good = 900

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