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(!!) (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)
(!!) (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)
$ 89.99
1 Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's in white boxes - different shpae top mica
1 tube) 25.0ma Gm=1700 (1930's) Super Silvertone
1 tube) 21.5ma Gm=1800 (1940's) RCA Victor
Tested on Amplitrex
Vplate=180V
Vgrid=-38V
Good Ma = 20ma
Good Gm = 1600-1700
See more: vacuum tube
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 (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_45710534-6ffe-4a40-b705-1cbdbca59c53.jpg?v=1753031446){kind=link}
 (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm) "Pin It")