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(1) Tested 1954 Sylvania 6W4GT Tube Date Code 413 Sylvania Green Logo 6W4 GT

(1) Tested 1954 Sylvania 6W4GT Tube Date Code 413 Sylvania Green Logo 6W4 GT

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(1) Tested Sylvania 6W4GT Tube.
Date Code 413 (13th week of 1954).

Tested on a calibrated Hickok TV-10 military tube tester with no shorts at 1450 where 800 is minimum pass/good.

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