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407B Western Electric used/very good 1965

407B Western Electric used/very good 1965

$ 21.99

1 tube) 407B Western Electric used/very good "D" getter halo (6526=1965) in white box (43/26 and 45/26) "B" is faded on glass

 

 

(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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