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407B Western Electric NOS 1964 (1 tube)

407B Western Electric NOS 1964 (1 tube)

$ 33.99

1 tube) 407B Western Electric NOS "D" getter halo (6452=1964) in white box

37/26

41/26

 

Tested on TV-7

26=65%

 

 

 

(407A=396A with a 20V filament)
(407B=premium grade 407A with higher Gm and higher plate current specs, 20V Filament)
See more: vacuum tube
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