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(!!!!) (SINGLE) 12AU7A GE NOS 1972 copper grid posts (10.6/9.8ma) (warm and smooth)
(!!!!) (SINGLE) 12AU7A GE NOS 1976 copper grid posts (9.4/8.8ma)
(!!!!) (Single) 12AY7 GE branded Raytheon black box plates "D" getter 1953 era in white box (3.3/3.1ma) (Same Gm)
(!!!!) (Single) 12BH7 Tungsol branded Shield gray oval plates "U" getter halo NOS 1961 (11.8/16.5ma) (Highest mA and Gm)
(!!!!) (Single) 12BH7A GE gray oval plates NOS mid-1960's (11.5/16ma)
(!!!!) (Single) 5670W GE JAN NOS 1986 (8.6/8.8ma)
(!!!!) (Single) 5751 GE NOS gray plates NOS 1981 (2.6/2.9ma) (Same Gm)
(!!!!) (Single) 6080 GE black plates NOS 1980 era (86ma/72ma)
(!!!!) (SINGLE) 6BL7GTA RCA NOS 1966 (33.4/33.0ma)
(!!!!) (Single) 6CG7 Tungsol NOS 1960 era black shield between plates - pin #3 slightly shorter (8.6ma/10ma)
(!!!!) (Single) 6L6GC=6n3CE Russian NOS 1990 coin/wafer base (75.6ma)
(!!!!) (Single) 6U8A GE NOS 1977 (15ma/9.4ma)
(!!!!) (Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 low hours/like new (2.2/2.0ma)
(!!!) (2nd Best GE Pair 1956) JG-6021 GE NOS "D" getter halo 1956 (6.3/5.9ma and 5.7/6.2ma) (mil-grade)
(!!!) (Best 12AT7WC Single) JAN-12AT7WC Sylvania black plates NOS 1978 (9/10ma)
(!!!) (Best GE Pair) 7027A GE NOS 1970's - 1980 (65ma and 67ma)
(!!!) (Best GE Single) 6EU7 GE NOS pinched gray plates 1975 (56/32 and 58/32)
(!!!) (Best Overall Pair) 6AU6A GE NOS 1977 (7.1ma and 7.3ma) (Same Gm) 1-2% matched (Sony C800G mic)
(!!!) (BEST OVERALL PAIR) 6L6 GE metal can NOS 1970 (72.5ma and 73.5ma)
(!!!) (BEST PAIR #1) 6463 GE NOS 1965 (16.4/16.5ma and 16.8/17.8ma) (same pinout as 6350)
