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(1) Tested Strong Sylvania 6DW4 Tube Date Code gk ALA Sylvania Rectifier (b)

(1) Tested Strong Sylvania 6DW4 Tube Date Code gk ALA Sylvania Rectifier (b)

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(1) Tested Strong Sylvania 6DW4 Tube.
Date Code gk ALA.

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

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