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Classic Currents

(1) Tested 1951 Sylvania JAN CHS 7S7 Tube and Box Code 126 Loctal Triode Heptode

(1) Tested 1951 Sylvania JAN CHS 7S7 Tube and Box Code 126 Loctal Triode Heptode

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(1) Tested 1951 Sylvania JAN-CHS-7S7 Tube with original Box.
Date Code 126. The box has a date of 7/51.

Box shows wear from age and storage.

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

Gm Test = 1650-2075 micromhos
Minimum pass/good = 950-950

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