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6AQ5A Sylvania used/good 1960's (41.5ma)
6AQ5A=6669 European NOS branded Siemens NOS 1975 (48.5ma)
6AR5 RCA JAPAN branded Gt. Britain NOS (2 in stock)
6AR5 used (3 in stock)
6AR6 Raytheon black plate used/good 1952 (67ma)
6AS5 US Brands NOS (60 in stock)
6AS7GA GE black plates NOS 1963 (107ma and 84ma)
6AS7GA GE NOS 1970 era (77ma and 82ma)
6AS7GA GE NOS 1979 (105ma and 126ma)
6AS7GA Sylvania branded RCA NOS 1983 (100ma and 125ma)
6AS7GA Sylvania metal base NOS 1960's (77/87ma)
6AU5GT Raytheon Japan gray plate NOS 1960's (single)
6AU5GT RCA black plates NOS 1950's (1 pair: 54ma and 53ma)
6AU5GT RCA gray plates NOS 1960 (57ma)
6AU5GT RCA gray plates NOS 1960 (66ma)
6AU5GT used/good
6AV5GA GE NOS 1957 (67ma)
6AV5GT Sylvania NOS (0 in stock)
6B4G Ken Rad branded RCA coated glass NOS 1946 (110ma)
6B4G Philco by Sylvania NOS 1947 (80ma)
