47 National Union used/good 1940's (32.8ma Gm=2070)
$ 13.99
47 Nat. Union used/good 1940's
32.8ma
Gm=2070
(2.5 watts)
(2.5V filament)
See more: vacuum tube
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47 Nat. Union used/good 1940's
32.8ma
Gm=2070
(2.5 watts)
(2.5V filament)