(!!!) (Recommended Pair) 407A Western Electric NOS "O" getter 1972-1983 (40-40/26 and 42-43/26)

1 pair) 407A Western Electric NOS "O" getter original boxes  

1 tube) 40/26 and 40/26 (1983)

1 tube) 42/26 and 43/38 (1972)

Tested on TV-7D/U

407A=396A with a 20V filament