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(!) (#1 47 Sylvania) 47 Sylvania NOS 1951 (28ma Gm=2300)

(!) (#1 47 Sylvania) 47 Sylvania NOS 1951 (28ma Gm=2300)

$ 29.99

1 tube) 47 Sylvania green printing 1951

28ma

Gm=2300

 

 

(2.5 watts)

(2.5V filament)

See more: vacuum tube
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