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837 Ken Rad used/tests like new 1940's scratched base (87/50)
837 US Brands NOS (0 in stock)
8370 Electronic Enterprises Hydrogen Thyratron NOS 1968 sold as-is (23 in stock)
8370 ITT USA Electron Hydrogen Thyratron NOS 1966-1967 sold as-is (2 in stock)
841 RCA Deforest balloon NOS original box
8417 Sylvania branded GE used/good 1970's (87ma)
8417 Sylvania branded GE used/good 1970's (92.6ma)
8422=5991 National Nixie tube NOS 1993 (14 pins) (sold out)
8423=B-6091 Burroughs Nixie Tube (0 in stock)
843 RCA NOS 1944
84=6Z4 GE NOS 1950 (51/40 and 52/40)
84=6Z4 Philco used/fair 1940's (42/40 and 43/40)
84=6Z4 Raytheon used/good 1940's (52/40 and 54/40)
84=6Z4 RCA NOS GT-shape glass slightly tilted glass 1967 (44/40 and 47/40)
84=6Z4 RCA NOS GT-shape glass tilted glass 1967 (47/40 and 48/40)
84=6Z4 Sylvania branded RCA used/good 1940's (49/40 and 49/40)
84=6Z4 Sylvania used/good 1940's (49/40 and 51/40)
85 Ken Rad used/good 1950 (45/25)
85 no printing used/strong 1940's (50/25)
85 RCA Cunningham engraved base used/tests like new
