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(1) Tested Strong GE 6BK5 Tube with Box Date Code RW Beam Power Vacuum Tube

(1) Tested Strong GE 6BK5 Tube with Box Date Code RW Beam Power Vacuum Tube

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(1) Tested Strong GE 6BK5 Tube with Original Box.
Date Code RW.

This tube tests as NOS.

Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts or leaks with the following results:

Gm Test = 5500 micromhos
Minimum pass/good = 3450
NOS rating = 5175

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