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12D4 Philco by Sylvania used/tests like new 1959 (62/40)
EK90=6BE6 Philips France NOS 1971 (2.9ma Gm=1300) (Highest mA and Gm)
(!!!) 6DE7 GE Great Britain made in Japan NOS 1970 (5.6/24ma) (Woo Audio)
(!!!) 6DE7 GE Great Britain made in Japan NOS 1970 (3.8/30ma) (Woo Audio)
(SIngle) 6AW8A Raytheon coated glass NOS 1957 (3.8/15ma)
(!!) (Single) 6SN7GTB Raytheon black plates NOS 1960 era (6.2/7.6ma)
(!!) (Single) 6SN7GTB Raytheon black plates short bottle NOS 1950's (8/7ma) (High Gm)
EF92 Mullard England used/good 1958 (80/60)
7A7 Tungsol NOS (2 in stock)
(!) (Best Single) 6BE6 GE NOS 1960 (1.5ma)
(!!!) (Single 1960) ECC83=12AX7 VALVO Germany made in Hamburg "O" getter used/good 1960 (0.9/1.0ma)
12D4 Raytheon used/good 1960's (46/40)
12D4 WG Co. by Sylvania used/strong 1959 (53/40)
(!) (PAIR) 7A7 Philco by Sylvania used/strong 1940's (58/44 and 60/44)
7A7 Sylvania used/good 1951 (56/44)
(!!!!) (BEST PAIR #3) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (18.8/16.3ma and 18.9/17.2ma)
(!!!!) (BEST PAIR #4) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (15.9/15.8ma and 14.5/15.5ma)
(!!!!) (BEST PAIR #3) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (20.7/18.5ma and 18.2/21.9ma)
(!) (BEST PAIR) 12D4 GE gray plate NOS 1961-1964 (52/40 and 52/40)
12D4 GE NOS 1964 (52/40)
