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42 Philco balloon engraved base used/good 1930 era (31ma)

42 Philco balloon engraved base used/good 1930 era (31ma)

$ 39.99

42 Philco balloon engraved base used/good 1930 era 

31ma

Gm=1730

 

Good used Ma range 25-30ma

Good used Gm range 2000-2300

 

See more: vacuum tube
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