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6AS6 Tungsol NOS 1950's (4.4ma)
12SF5GT Ken Rad NOS (1.2ma Gm=1800)
(!) (Best Single) 12SF5GT National Union NOS 1950 (2.1ma Gm=1600)
(!!!!) (1 Pair) 5654=6AK5 Raytheon Toshiba Japan NOS 1970's (6.9ma and 7.3ma)
(!!!!) (Best Pair #1) JAN-5842WA Raytheon NOS 1984 original boxes (28ma and 30ma) 1-5% matched
(!!!!) (BEST PAIR #2) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (15.7/14.9ma and 15.0/14.2ma)
(!!!!) (Single) 5670W GE JAN NOS 1987 (9.4/10.6ma)
EF95=6AK5 Raytheon Toshiba Japan NOS 1960's (6.1ma)
(!) (Best SIngle) EF95=6AK5 Raytheon Toshiba Japan NOS 1960's (8.6ma)
EF95=6AK5 Raytheon USA NOS 1957 (7.5ma)
(!!) (Recommended Single) 5654=6AK5W Tungsol gray plate NOS 1950's (6.8ma)
(!!!) JAN-CHS-6SJ7WGT Sylvania NOS 1956 (2.5ma)
(!) (Single) 37 GE smooth plate NOS 1943 (7.1ma)
(!!!!) (Best Single 1953) 12BH7 Sylvania Motorola black oval plates "D" getter like new 1953 (14.6/13.8ma) (High mA and Gm)
(!) (Single) 37 Silvertone smooth plate used/tests like new 1930's 1 top mica is folded down (7.1ma)
(!) (Single) 37 Philco by Sylvania smooth plate tests like new 1940's (8.3ma)
JAN-CHS-12J5GT Sylvania round plate NOS 1944 (6.5ma)
(!!!) (Single) 12BH7 Raytheon Oval Black Plates "D" getter used/good 1950's (7/6.5ma)
(!!) (Pair) 37 Sylvania 1940 era used/good no printing (6.6ma and 6.5ma) (Same Gm) 1-2% matched
(!!!!) (Single 1958) 5751 Sylvania black plates triple mica D getter halo 1958 used/good (2.7/2.3ma)
