Western Electric Mil-Spec JW 396A/2C51/5670 Vacuum Tube Black Plate Square Getter Made in USA. Desirable JW mil-spec square getter version. Date code: 752 Made in the 4th quarter 1957 in USA. Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 6400/6400 where minimum good value is 3150 Very strong with tightly balanced triodes! |
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