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6CG7 Sylvania Emerson used/good chrome electrostatic shield between plates "U" getter 1957 (6.2/6.8ma)
6CG8A NOS
6CH8 US Brands NOS (8 in stock)
6CK4 Sylvania NOS
6CL5 Sylvania rebranded International NOS 1956 (0 in stock)
6CL8A GE NOS (8 in stock)
6CL8A Sylvania NOS (15 in stock)
6CM7 GE NOS 1974 (4.4ma and 19ma)
6CM7 RCA NOS 1960's (4.6ma and 17.5ma)
6CM7 Westinghouse Canada NOS 1960's (5.0ma and 16.6ma)
6CM8 NOS (5 in stock)
6CN7 NOS (6 in stock)
6CR6 US Brands NOS (8 in stock)
6CS6 RCA Brazil 1960's - 1970's (19 in stock)
6CS7 GE branded Tungsol NOS 1961 era (21/11ma)
6CS7 Raytheon by Toshiba Japan gray plates NOS 1970 era (21.5/10.2ma)
6CS7 RCA branded Westinghouse NOS 1967 (32ma and 10.6ma)
6CS7 RCA NOS 1970's (23.6ma and 13.5ma)
6CS7 Sylvania branded RCA used/good "U" getter halo 1950's (18/8.2ma)
6CS7 Tungsol NOS black plates 1960's (21/10ma) (internals like Sylvania)