485 Sparton engraved base used/good 1936 (5.5ma)
$ 17.99
485 Sparton engraved base used/good 1936
5.5ma
Gm=1300
(485 is a variant of Type 27 with 3V @ 1.25A filament)
(Sparton=The Sparks-Withington Co., Jackson, MI)
See more: vacuum tube
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