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Classic Currents

(1) Tested 1976 Sylvania 6Z10 6J10 Tube & Box Code lf AAO Pentode 6Z10 Tube (b)

(1) Tested 1976 Sylvania 6Z10 6J10 Tube & Box Code lf AAO Pentode 6Z10 Tube (b)

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(1) Tested Sylvania 6Z10/6J10 Tube with Original Box.
Date Code lf AAO (June of 1976).

The front tab of the box shows some slight denting and there is a small bit of writing on one side panel.

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

Sylvania = 79-100

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