1 5

Classic Currents

(1) Tested Strong 1957 Sylvania 7B4 Tube Code 7-52 Triode Loctal Tube (b)

(1) Tested Strong 1957 Sylvania 7B4 Tube Code 7-52 Triode Loctal Tube (b)

Tested and Guaranteed

$8.95 USD
$8.95 USD
Sale Sold out
Shipping calculated at checkout.
(1) Tested Strong Sylvania 7B4 Tube.
Date Code 7-52 (52nd week of 1957).

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

Gm Test = 1750 micromhos
Minimum pass/good = 940

~ Please view all 5 photos ~
View full details

View All