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6Q7GT Coronado 1940's tests like new (39/20)
6Q7GT Philco used/good 1947 (32/20)
6Q7GT Sylvania NOS 1947 hairline crack in base (30/20)
6Q7GT Zenith by Sylvania NOS 1946 (39/20)
6Q7GT Zenith NOS 1950's (31/20)
6R7 Hytron metal NOS 1951 (115/60)
6R7 metal NOS (5 in stock)
6R7 Sylvania metal NOS 1940's (106/60)
6R7 Sylvania metal used/like new 1940's (88/48)
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)
6R7GT Sylvania NOS 1947 (111/60)
6R8 Raytheon NOS 1950-1951 (4 in stock)
6S2=EY86 NOS
6S4 Sylvania black plate triple mica NOS "D" getter halo 1954 (28.2ma)
6S4A GE Admiral NOS 1965 (27.5ma)
6S4A GE Canada NOS 1965 (27ma)
6S4A Raytheon NOS 1961 (20ma)
