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(!!!) (Recommended Pair) 407A Western Electric used/very good 1961-1964 (40-41/26 and 38-40/26)
(!!!) (Recommended Pair) 407A Western Electric used/very good 1961-1964 (40-41/26 and 38-40/26)
$ 48.99
1 pair) 407A Western Electric used/very good "D" getter halo in white boxes
1 tube) 40/26 and 41/26 (6413=1964)
1 tube) 38/26 and 40/26 (6152=1961)
(407A=396A with a 20V filament)
(407B=premium grade 407A with higher Gm and higher plate current specs, 20V Filament)
See more: vacuum tube
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 (Recommended Pair) 407A Western Electric used/very good 1961-1964 (40-41/26 and 38-40/26)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/2_dc59c560-97c7-4dcb-b877-91a599de36f2.jpg?v=1661895390){kind=link}
 (Recommended Pair) 407A Western Electric used/very good 1961-1964 (40-41/26 and 38-40/26) "Pin It")