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(!!!!) (Recommended Pair) 407A Western Electric NOS 1961 same date codes (43-50/26 and 44-50/26) 1-2% matched

(!!!!) (Recommended Pair) 407A Western Electric NOS 1961 same date codes (43-50/26 and 44-50/26) 1-2% matched

$ 59.99

1 tube) 407A Western Electric NOS "D" getter halo (6139=1961) same date codes

1 tube) 43/26 and 50/26

1 tube) 44/26 and 50/26

 

Matched on TV-7D/U

 

407A=396A with a 20V filament

407B=premium grade 407A with higher Gm and higher plate current specs

407A and 407B have 20V Filament

See more: vacuum tube
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