7234 MU NOS
7239 GE NOS
7241 Tungsol used - sold as-is untested - 1959 (1 in stock)
7241 Tungsol used - sold as-is untested - 1959 - slightly tilted glass (1 in stock)
7242 Tungsol used
7315 Dumont NOS
7408=6V6GT Russian NOS branded International 1970's (46.5ma)
7408=6V6GT Sylvania branded Amperex NOS 1974 (45ma)
7551 RCA black plate branded Motorola NOS 1970's (20 in stock)
7551 Sylvania NOS (20 in stock)
7558 US Brands NOS (2 in stock)
7581 Tungsol brown base used/75% 1964 (52.5ma)
7581A GE branded RCA NOS 1974 (59.5ma)
7581A GE branded RCA used/good 1973 (56ma)
7581A GE NOS 1979 (76ma)
7581A GE NOS 1979 (87ma)
7581A GE used/good 1974 (59ma)
7591 Fisher Westinghouse used/good/75% 1963 (43.5ma, Gm=7450)
7591 Tungsol used good 1963 (55ma, Gm=8100)
7591 Westinghouse branded RCA NOS 1963 (51.5ma, Gm=9050)
