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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
50A5 US Brands NOS (2 in stock)
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 GE branded Westinghouse NOS 1970 era (92/60)
50L6GT GE NOS 1949-1951 (6 in stock)
50L6GT Ken Rad used/good 1947 (76/60)
