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(1) Tested Zenith 6SL7GT Tube Code 852 Sylvania EIA 6SL7 GT Twin Triode

(1) Tested Zenith 6SL7GT Tube Code 852 Sylvania EIA 6SL7 GT Twin Triode

Made by Sylvania for Zenith

$18.95 USD
$18.95 USD
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(1) Tested Zenith 6SL7GT Tube.
Date Code 852.
The 312 EIA code indicates that this tube was made by Sylvania for Zenith.

Very impressive full envelope flashing!

This tube tests as NOS.

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

Gm Test = 1500-1625 micromhos
Minimum pass/good = 1000-1000
NOS rating = 1500-1500

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