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(1) Tested Ken Rad 12Z3 Tube Date Code 648 Half Wave Rectifier Vacuum Tube

(1) Tested Ken Rad 12Z3 Tube Date Code 648 Half Wave Rectifier Vacuum Tube

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(1) Tested Ken Rad 12Z3 Tube.
Date Code 648.
The 188 EIA code indicates that this tube was made by GE for Ken Rad.

This tube tests as NOS.

Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts at 1525 where 800 is minimum pass/good.

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