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*

Bid is for one tube, circa 1953, USA made by GE for Sylvania,
type 12AY7 vacuum tube
as pictured.

Condition:
New Old Stock / New In Box

Silk-Screening:
Please refer to photos

Acid Etched Designation:
12 / AY7

Date Code:
3-52

Tube features gray-BOX-plates, 2 mica spacers, 2 extra support rods between mica spacers and a top-angled-mount 'Rectangular' shape getter construction.

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Hickok TV-7D/U* tested

@ 58/60

minimum acceptable value for a good tube
32/32
(Triode#1 / Triode#2)

*Hickok TV-7D/U is a mutual conductance type tube tester. It does check for mutual conductance which is a more accurate measure of tube's age.

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*FantasticTubes !!!