(!!!) (Single) 8417 Sylvania branded Dumont NOS 1980 (84ma)
(!!!) (Single) ECC81=12AT7 Telefunken Germany <> bottom NOS 1963 (6.8ma/7.6ma) (recommended for mic)
(!!!) 8417 GE NOS 1986 (103.5ma)
(!!) (#1 6HM5 Japan Pair) 6HA5=6HM5 Hitachi Japan branded RCA NOS 1970's (14.5ma and 15ma) (Highest Ma and Gm)
(!!) (#2 6HM5 Japan Pair) 6HA5=6HM5 Hitachi Japan branded RCA NOS 1970's (12ma and 13ma)
(!!) (Best Single) EC92=6AB4 Siemens Halske Germany NOS 1971 (10.2ma)
(!!) (BEST VALUE PAIR) 8417 Sylvania rebranded GE NOS in white boxes 1970's (86ma and 84ma)
(!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (17ma and 18ma) (Highest mA and Gm)
(!!) (Recommended Pair) 8417 Sylvania NOS 1970 era (92.6ma and 93.8ma)
(!!) EC92 Siemens Halske NOS rebranded Philips Miniwatt 1968 "O" getter halo (6.8ma)
(!) (Single) 7868 RCA Relco like new 1970 era (55ma)
(Best Single) 7868 GE branded RCA NOS 1970's (62ma)
(Good Value) 8417 Sylvania NOS 1970's (76.6ma)
6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (8 in stock)
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)
7591A Sylvania branded RCA coin-base NOS 1970's (63ma, Gm=10,000)
7591A Sylvania branded RCA used/75% 1968 (51ma, Gm=7,600)
7868 RCA black plate tipped top NOS 1960 era (59ma)
