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6C6 RCA like new 1953 (2.0ma)
6C6 RCA used/tests like new 1940's (48/31) (2.0ma)
6C6 Sylvania NOS 1950 (48/31)
6C6 Tungsol NOS 1955 (45/31 and 2.1ma)
6C8G CBS NOS 1950's (like RCA) (3.7/4.1ma)
6C8G Raytheon round black plates used/tests like new 1940's (3.6/3.4ma)
6CA5 GE NOS
6CE5=6BC5 NOS
6CF6=6CB6A NOS
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 GE Zenith NOS 1969 (7.5ma and 25ma) (highest mA and Gm)
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)