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(!!) (Single) 12BH7 GE Delco gray oval plates "U" getter NOS 1950's (7ma/8ma) (Quicksilver, Wells, Doshi, McIntosh)
5687WA GE used/tests like new 1970's (44/45ma) (highest Ma and Gm)
(!!!) (Single) CK-5687 Raytheon black plates "O" getter like new 1960 (30/33.5ma)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (25/27ma and 26.5/26ma)
(!!) ECF82=6U8 Telefunken Germany <> bottom NOS 1968 (12.8ma triode and 8.2ma pentode)
EBF80=6N8 Telefunken Germany Diamond NOS rebranded International 1971 (1 in stock)
EBF80=6N8 Tungsram Hungary branded Telefunken Germany 1961 (2 in stock)
EBF80=6N8 Mullard Holland low hours/tests like new 1957
(!!!) (Single) 12AU7A RCA clear top NOS 1968 (8/11ma)
(!!!) (Recommended Single) 12AU7A RCA clear top NOS 1960 era (9.6/9.8ma) (Same Gm)
(!!!!) (Recommended Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.6/10.8mA)
(!!!!) (Single) 12BH7A Sylvania Silvertone gray oval plates large "O" getter halo 1960 era NOS (11.5/10.6ma)
(!!!) (2nd Best Single) 5965A GE "5 Star" NOS 1964 (19.2/14.6ma)
(!!!) (Best Pair #3) 6CW4 RCA NOS 1961-1965 (103/60 and 102/60)
6BE6 Sylvania NOS 1960's (1.5ma Gm=900)
(!!!!) (BEST Pair) 6CW4 GE NOS 1975-1976 (120/60 and 120/60) (strong emission)
(!!!!) (BEST Pair #3) 6CW4 GE NOS 1974-1978 (105/60 and 107/60) (strong emission)
(!!!!) (Best Pair #3) 6EU7 RCA NOS 1967 (48-49/32 and 51-52/32)
UX-201-A Radiotron used/good 1930 era (2.4ma Gm=550)
(!!) 5654=6AK5 RCA Command Series black plate NOS 1968 (6.8ma)
