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(!) 47 RCA Radiotron engraved base used/good 1930's (27.5ma Gm=2250)

(!) 47 RCA Radiotron engraved base used/good 1930's (27.5ma Gm=2250)

By Tube World

$ 21.99

1 tube) 47 RCA Radiotron engraved base used/good 1930's in white box

27.5ma

Gm=2250

 

NOS Ma range 26-31ma

NOS Gm range 2300-2500

 

 

(2.5 watts)

(2.5V filament)

See more: vacuum tube
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