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(1) Tested Sylvania 7Q7 Tube with Original Box Pentagrid Converter Loctal Tube

(1) Tested Sylvania 7Q7 Tube with Original Box Pentagrid Converter Loctal Tube

Tested and Guaranteed

$9.95 USD
$9.95 USD
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(1) Tested Sylvania 7Q7 Tube with Original Box.
The wording is mostly worn off of the glass but is still recognizable as being Sylvania branded.
The box has a small bit of writing on the front tab.

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

Gm Test = 725-750 micromhos
Minimum pass/good = 500-500

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