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6CS7 Sylvania branded RCA used/good "U" getter halo 1950's (18/8.2ma)
6CS7 RCA branded Westinghouse NOS 1967 (32ma and 10.6ma)
(!!) (RCA Pair) 6CS7 RCA NOS 1962-1965 (17/11ma and 17/12.6ma)
6CS7 Tungsol NOS black plates 1960's (21/10ma) (internals like Sylvania)
6CU5 NOS (10 in stock)
6CU6 Sylvania black plate like new condition (54ma)
6CU6 Sylvania black plate NOS (55ma)
6CU6 Sylvania black plate NOS (72ma)
6CU6 Sylvania gray plate NOS (58ma)
6CU6 Sylvania gray plate NOS (87ma)
6CU8 US Brands (15 in stock)
6CW4 GE like new 1980 (120/60)
6CW4 GE NOS 1976 (116/60)
6CW4 RCA NOS 1970 era (1 in stock)
(!!) (PAIR) 6CW4 GE NOS 1980-1981 (88/60 and 91/60)
(!!) (Best Pair) 6CW4 Sylvania NOS 1960's (120/60 and 120/60)
6CW4 Tungsol NOS (1 in stock)
6CW4 used/good (5 in stock)
6CX8 US Brands NOS (14 in stock)
6CX8 US Brands NOS (2 for $5)
