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257A Western Electric printed base NOS 1960

257A Western Electric printed base NOS 1960

By Tube World

$ 99.99

1) 257A WE NOS 1960

 

(257A=231D with top cap for grid connection)

 

See more: vacuum tube
Tags: 1930's, 1950's, 257A, all, engraved base, triode, western electric, wp
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