(!!!) 6AS7G RCA gray plates NOS 1971 (70ma/75ma)
6AS7GA GE black plates NOS 1965 (105ma and 135ma)
6AS7GA GE NOS 1970 era (77ma and 82ma)
6AS7GA GE NOS 1979 (100ma and 145ma)
6AS7GA GE NOS 1979 (105ma and 126ma)
6AS7GA Sylvania branded RCA NOS 1983 (100ma and 125ma)
6AS7GA Westinghouse like new 1967 (67ma and 71ma)
