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6DR7 GE NOS 1965 (1.1ma/36ma)
6DR7 Raytheon black plates NOS around 1960 (1.2ma/40ma)
6DR7 Sylvania branded GE black plates NOS 1977 (4.6ma/25ma)
6DS4 GE NOS 1970 (1 in stock)
6DS4 RCA NOS (1 in stock)
6DX8=ECL84 GE Hitachi JAPAN 1972 (5.1mA and 13mA) (Shindo)
6DX8=ECL84 GE Hitachi JAPAN 1978 (3.0mA and 14mA) (Shindo)
6DX8=ECL84 Motorola Toshiba JAPAN used/good 1960's (3.3mA and 12.5mA) (Shindo)
6E5 RCA NOS 1970's (bright eye)
6EC4A=EY500 GE JAPAN NOS 1960's (1 pair)
6EN4 US Brands NOS (12 in stock)
6EQ7 US Brands NOS (3 in stock)
6EZ5 US Brands NOS (3 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)
