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6EM7 RCA coin-base NOS 1971 (3.2ma/55ma)
6EM7 RCA coin-base used (2.5ma/28ma)
6EM7 Sylvania NOS 1970 (1.5ma/47ma)
6EM7 Sylvania Silvertone NOS 1960's (1.5ma/55ma)
6EN4 US Brands NOS (12 in stock)
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)
