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Classic Currents

(1) Tested 1952 Sylvania 25Z5 Tube Date Code 2-26 Rectifier Doubler Tube (b)

(1) Tested 1952 Sylvania 25Z5 Tube Date Code 2-26 Rectifier Doubler Tube (b)

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(1) Tested Sylvania 25Z5 Tube.
Date Code 2-26 (26th week of 1952).

Tested on a calibrated Hickok TV-10 military tube tester with no shorts at 1450-1475 where 800-800 is minimum pass/good.

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