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6P5GT Westinghouse NOS 1960 era (62/36)
6P7G Sylvania NOS (3 in stock)
6Q5G Dumont NOS (3 in stock)
6Q7 Tungsol metal can NOS 1950's (35/20)
6Q7G Tungsol used strong 1940's (38/20)
6Q7GT Coronado 1940's tests like new (39/20)
6Q7GT Sylvania NOS 1947 hairline crack in base (30/20)
6R7 Hytron metal NOS 1951 (115/60)
6R7 metal NOS (5 in stock)
6R7 Sylvania metal used/like new 1940's (88/48)
(!) Best Single) 6R7G GE NOS 1945 era (110/60)
6R7GT Haltron England 1940's tests like new (85/48) strong single
6R7GT Ken Rad NOS 1944 (100/48)
6R7GT Ken Rad NOS 1944 (108/48)
6R7GT RCA NOS 1940's (2 in stock)
6R8 Raytheon NOS 1950-1951 (4 in stock)
6S2=EY86 NOS
6S7 US Brands metal can NOS (5 in stock)
6S7G Coronado NOS 1940's (2 in stock)
6S8GT Tungsol tests like new scratches on base 1952 (102/60)