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6C6 Tungsol NOS 1955 (45/31 and 2.1ma)
6C7 Majestic coated glass NOS (2 in stock)
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)
6CA4 GE branded Tungsol like new 1960's (55/40 and 56/40)
6CA4 RCA branded Super Airline NOS 1960 era (54/40 and 54/40)
6CA4=EZ81 RCA used/good 1962 (53/40 and 53/40)
6CA4=EZ81 Sylvania used/good 1960's (53/40 and 53/40)
6CB5A RCA NOS 1973 (74ma)
6CB5A RCA NOS 1973 (86ma)
6CB5A RCA NOS faded 1970 (113ma)
6CG7 GE used/good gray electrostatic center shield between plates "O" getter halo 1960 (6.2/6.8ma)
6CK3 GE NOS 1973 (1 pair)
6CL3=6CK3 RCA NOS (1 pair)
6CL3=6CK3=6DW4B Raytheon Japan NOS
6CL6 RCA FAA NOS 1963 (34.5ma)
6CL6 US Brands NOS (29 in stock)
6CL6 US Brands used/good (8 in stock)
6CL8A GE NOS (8 in stock)