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(1) Tested Tung Sol 6SL7GT Tube Tall Bottle Gray Glass Date Code T-13 6SL7 GT

(1) Tested Tung Sol 6SL7GT Tube Tall Bottle Gray Glass Date Code T-13 6SL7 GT

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$68.95 USD
$68.95 USD
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(1) Tested Very Strong Tung Sol 6SL7GT Tube.
Date Code T-13.

Tall bottle envelope with gray glass and a bottom square D getter.
The tube number is worn off of the glass.

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

Gm Test = 1875-2000 micromhos
Minimum pass/good = 1000-1000
Average NOS rating = 1500-1500

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