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(!) (#1 47 Single) 47 RCA NOS 1940's reprinted - small hairline crack in base (37ma Gm=2700) (highest Ma and Gm)

(!) (#1 47 Single) 47 RCA NOS 1940's reprinted - small hairline crack in base (37ma Gm=2700) (highest Ma and Gm)

By Tube World

$ 24.99

1 tube) 47 RCA NOS 1940's reprinted - small hairline crack in base

37ma

Gm=2700

 

(2.5 watts)

(2.5V filament)

See more: vacuum tube
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