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6EQ7 US Brands NOS (3 in stock)
6EU7 GE NOS 1960's (48/32 and 56/32)
6EZ5 US Brands NOS (3 in stock)
6EZ8 NOS (6 in stock)
6F5 GE Amperex metal can NOS (1.0ma Gm=1500)
6F5 GE metal can NOS 1946 (1.2ma Gm=1700)
6F5 RCA metal can NOS 1950's (1.0ma Gm=1500)
6F5 RCA metal can NOS 1973 (1.1ma Gm=1500)
6F5 RCA Victor metal can used/good 1940's (0.6ma Gm=900)
6F5 Sylvania metal can NOS 1954 (1.0ma Gm=1500)
6F5 US Brands metal can NOS (9 in stock)
6F6G RCA Cunningham used/good 1947 (31ma) (Gm like new)
6F6G RCA Victor used/strong 1945 era (30.6ma) (Gm like new)
6F6G Tungsol used/strong 1940's (34ma) (Gm like new)
6F6GT Sylvania used/good 1949 broke off guide pin (32ma)
6F8G GE black parallel ribbed plates NOS 1940's (6.2ma/7.2ma)
6F8G GE parallel plates NOS 1940's (8.0ma and 8.4ma)
6F8G Raytheon NOS 1945 era (5.8/5.4ma)
6F8G Raytheon staggered black ribbed plates used/strong 1940's (7.6ma and 8.8ma)
6F8G RCA gray ribbed staggered plates NOS no printing 1950 era (7ma/8ma)
