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5693 RCA used good 1953 (2.9ma)
(!!!) (Recommended Single) JAN-CHS-6SN7WGT Sylvania parallel black plates like new 1952 (6.8ma and 6.6ma)
6FQ7 Realistic by GE NOS gold plated pins 1970's (8/6ma)
(!) (Best Value Single) 6FQ7 GE branded RCA NOS 1966 (7.6/7.2ma)
(!) (Good Value) 12BH7A GE gray oval plates used/good "O" getter 1960 (6.5/7.0ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1961 (11.4/14.4ma)
(!!) (Best Single) 7247=12DW7 GE NOS 1960's (1.1/13.8ma)
57 Cunningham used/tests like new 1930's (45/31)
(!!!!!) (BEST VALUE PAIR #3) 6SN7GTB GE coin-base NOS 1979 same date codes (8.4/8.2ma and 7.4/7.4ma) (Schiit Freya, Rogue)
(!!) (Best Pair #2) JHS-6AU6WB Sylvania NOS 1964-1968 (6.4ma and 6.6ma)
(!!!!) (Best Overall Pair 1964) 12AU7=ECC82 Mullard BVA UK ribbed plates shield logo NOS 1964-1965 (13.3/12ma and 12.6/11.5ma) (Rogue, Hovland, Audio Note) (Highest mA and Gm)
(!!!!) (Best Single #1) EC92=6AB4 Telefunken Germany <> bottom NOS 1968 (10.6ma) (mic)
(!!) (Best Pair #1) JHS-6AU6WB Sylvania NOS 1963-1968 (7.2ma and 7.2ma)
(!!!) (Recommended Single) ECL82=6BM8 Pope Holland NOS 1969 made in Hendon Works Australia plant (2.3/43ma)
(!!) (Best Pair #1) JHS-6AU6WA Sylvania NOS 1960 (8.3ma and 8.5ma)
(!!) (Best Pair #2) JHS-6AU6WA Sylvania NOS 1960 (7.5ma and 7.6ma)
(!!!!) (Best Pair #1) 5814A Philips JAN NOS 1985-1987 (9.2/9.8ma and 9.1/10.2ma) 1-3% matched (close Gm)
6JK6 Sylvania branded RCA NOS 1970 era (7.2ma)
(!!!!) (Best Single #2) 12AU7=ECC82 Mullard UK shield logo NOS 1965 (11.2/12.6ma) (smooth rich sound)
(!!!!) (Single 1961) 12AU7=ECC82 Mullard BVA UK shield logo NOS 1961 (7.5/9ma) (Gf1 series) (smooth rich sound)
