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(!!!) (Best Sylvania pair) 6973 Sylvania short bottle 1960's - 1970 same build (53ma and 49ma)
(!!!) (Best Sylvania pair) 6973 Sylvania short bottle 1960's - 1970 same build (53ma and 49ma)
By Tube World
$ 179.99
1 matched pair) 6973 Sylvania short bottle 1960's - 1970 same build
1 tube) 53ma Gm=5000 in white box
1 tube) 49ma Gm=4780
Matched on Amplitrex
Good Ma range = 40-46ma
Good Gm = 4200-4500
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See more: vacuum tube
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 (Best Sylvania pair) 6973 Sylvania short bottle 1960's - 1970 same build (53ma and 49ma) "Pin It")