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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)
6AQ6 US Brands NOS (25 in stock)
6AQ7GT US Brands NOS (12 in stock)
6AR11 GE NOS (9 in stock)
6AR5 RCA JAPAN branded Gt. Britain NOS (0 in stock)
6AR5 used (3 in stock)
6AR6 Raytheon black plate used/good 1952 (67ma)
6AR8 GE NOS 1950's
6AS11 GE branded Dumont NOS (1 in stock)
6AS5 US Brands NOS (60 in stock)
6AS6 GE NOS (4 in stock)
6AS6 RCA gray plate NOS 1960's (4 in stock)
6AS6=409A Western Electric used/tests like new 1951 (5.4ma)
6AS7GA GE black plates NOS 1963 (107ma and 84ma)
