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4CX250K=8245 Eimac like new 1963 was hermetically sealed (similar to 8172)
4CX250K=8245 Eimac NOS 1960's hermetically sealed (6 in stock) (similar to 8172)
4D22 Raytheon display tube
4E27 Gammatron used 1940's good filament
4E27 Lewis and Kaufamn NOS original boxes 1950's (3 in stock)
4E27 RCA used 1950 good filament
4PR60C=8252 Eimac PULSE TETRODE NOS
4X150A=RCA NOS 1970 sold as-is
50B5 RCA branded Raytheon NOS 1950's (64/45)
50B5 RCA NOS 1958 (64/45)
50B5 RCA tilted glass NOS (68/45)
50B5 RCA used/good 1950's (63/45)
50B5 RCA used/good 1950's (64/45)
50B5 Tungsol NOS 1956 (76/45)
50B5 used/good (1 in stock)
50EH5 RCA NOS 1970 (95/60)
50EH5 Sylvania NOS 1960's (79/60)
50EH5 Westinghouse NOS 1960's faded printing (95/60)
50L6GT Emerson by RCA used/good 1940's (91/60)
50L6GT GE branded Westinghouse NOS 1970 era (92/60)
