(!!) (Best Single) 407A Western Electric NOS 1979 (47/26 and 50/26)
$39.99
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407A Western Electric NOS "O" getter halo 1979 47/26 50/26 Tested on TV-7D/U 26=65% (407A=396A with a 20V filament)(407B=premium grade 407A with higher Gm and higher plate current specs, 20V Filament)
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