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(1) Tested Zenith 6DU3/6DQ3A Tube with Box Date Code 76-22 Zenith 6DU3 6DQ3A

(1) Tested Zenith 6DU3/6DQ3A Tube with Box Date Code 76-22 Zenith 6DU3 6DQ3A

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$11.95 USD
$11.95 USD
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(1) Tested Zenith 6DU3/6DQ3A Tube with Original Box.
Date Code 76-22.

Box shows staining and edge wear from storage.

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:

Zenith = 86

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