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(!!!!!) (~ Best 838 Pair ~) 838 United Electronics NOS 1940's in white boxes, 1 tube is slightly taller

$ 288.88

1 pair) JAN-CUE-838 United Electronics NOS 1940's same internals in white boxes, large getter flashing on glass, flat-foil getter halos, inverted top plug

1 tube) AJ974 some scratches on base - smeared printing

1 tube) AJ502 1/4" taller glass

 

test good

 

(838=variable-mu variant of 203A)

(4-pin bayonet base like 211)

See more: vacuum tube
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