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One pair, circa 1951, U.S.A made by RCA for Hytron,
type 6AS7G vacuum tubes
as pictured.
Please note: both tubes have loose debris (dried glue/cement i believe) inside their black bases
Manufacturer:
Labeled for Hytron, but according to their physical construction, these two tubes were manufactured by RCA i truly believe
Condition:
Beautiful looking tubes but no original carton, so selling as low hours used tubes
Date codes:
51-22
51-22
Tubes feature black plates, the highly sought after 'Clear Top' glasses and bottom-mounted '[]' getters construction.
Tubes appear identical in construction.
*
Hickok TV-7B/U* tested
@ 71/70 70/71
minimum acceptable value for a good tube:
36/36
(Triode#1 / Triode#2)
*Hickok TV-7B/U is a mutual conductance(Gm) type tube tester. It does check for mutual conductance which is a more accurate measure of tube's age.
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