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Classic Currents

(1) Tested 1964 Sylvania 0Z4 Tube Date Code lf YRM 0Z4 Gas Rectifier Tube (b)

(1) Tested 1964 Sylvania 0Z4 Tube Date Code lf YRM 0Z4 Gas Rectifier Tube (b)

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(1) Tested Sylvania 0Z4 Tube.
Date Code lf YRM (June, 1964).

Tested on a calibrated Hickok TV-10 military tube tester with no shorts at 1275-1225 where 800-800 is minimum pass/good.

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