CX-12 Cunningham NOS original box 1930”s (1 in stock)

1 tube) CX-12=WD-12 Cunningham NOS brass pins original box NOS 1930”s

(can be subbed for a WD-12 if you change the sockets)

(UX style 4 pin base)

(WD-12 is similar to X99 with 1.1 volt filament)