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(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950-1953 (1.0ma and 1.0ma) 1% matched **
7H7 Sylvania branded GE used/good 1940's (101/60)
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950 (1.0ma and 1.0ma) 1-2% matched **
(!) 6SQ7 Sylvania NOS 1951 (0.9ma and Gm=1000)
(!!!!) (Single) 6BK7B RCA NOS 1960's faded printing (7.4/7.4ma)
(!!!!) (Single) 6BK7B RCA NOS 1962 (7.4/8.3ma)
(!!) (slightly microphonic) 6922=E88CC Tesla Czech Republic NOS 1970 (18.6/20.4ma) (RODE)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (26/27ma and 26.6/27.8ma)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (26.2/27ma and 25.6/28ma)
(!) (Best Single) JAN-6AH6WA Sylvania NOS 1968 (11ma)
(!!!!!) (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm)
(!!) (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)
(!!!) (Best Pair) JHY-6AK5 Hytron black plate NOS 1952 (6.6ma and 6.8ma)
(!!!!) (Good Value Pair) 5687WB GE used/good 1970 era (25/27ma and 26.5/26ma)
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)
