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(1) Tested Sylvania 6FM7 Tube with Box Date Code ec EZZ Dual Triode Vacuum Tube

(1) Tested Sylvania 6FM7 Tube with Box Date Code ec EZZ Dual Triode Vacuum Tube

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$9.95 USD
$9.95 USD
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(1) Tested Sylvania 6FM7 Tube with Original Box.
Date Code ec EZZ

The wording is partially worn and faded but still legible.

Tested on a calibrated Knight KG-600B tube tester with no shorts and no leaks where 50 is minimum pass/good with the following results:

Sylvania = 100-92

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