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6AQ5A Amperex Japan NOS 1970 (48.8ma)
6AQ5A GE used/very good 1960's (40ma)
6AQ5A Hewlett Packard by Sylvania black plate like new 1960's (42.6ma)
6AQ5A International USA NOS (56ma)
6AQ5A Raytheon Japan NOS 1970's (2 in stock)
6AQ5A Sylvania branded International black plate NOS 1970 era (54ma)
6AQ5A Sylvania Philco gray plate NOS 1959 (52.5ma)
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 (0 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 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)
