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(1) Tested Very Strong CBS Hytron 6SA7 Tube with Box Date Code 5263 Pentagrid

(1) Tested Very Strong CBS Hytron 6SA7 Tube with Box Date Code 5263 Pentagrid

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$9.95 USD
$9.95 USD
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(1) Tested Very Strong CBS Hytron 6SA7 Tube with Original Box.
Date Code 5263.

The box has a small bit of writing on the front tab - see photos.

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:
Gm Test = 1050-1025 micromhos
Minimum pass/good = 470-470

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