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(!!!!) (Recommended Pair) 6FQ7 Zenith by GE NOS 1977 (6.5/10.6ma and 6.7/9.2ma)
(!!!!) (Recommended Pair) 6L6GT Russian branded Raytheon NOS 1970's in white boxes (83ma and 84.5ma)
(!!!!) (Recommended Pair) 6L6GT=6n3C Russian NOS 1982 in white boxes (74.6ma and 75.0ma)
(!!!!) (Recommended Pair) 6L6GT=6n3C Russian NOS 1982 in white boxes (76.2ma and 77ma)
(!!!!) (Recommended Pair) 7N7 Sylvania branded GE chrome top NOS 1954-1956 (7.4/7.0ma and 7.4/7.2ma) 1-2% matched
(!!!!) (Recommended Pair) 8417 Sylvania branded RCA NOS 1972-1973 (119.2ma and 123.7ma)
(!!!!) (Recommended Single 1954) GL-6201=12AT7WA GE "5 STAR" black plates triple mica D getter 1954 tests like new (8.2/8.4ma)
(!!!!) (Recommended Single) JG-6072 GE black plates triple mica "U" getter halo like new 1950's (2.5/3.1ma) (recommended for guitar amp or mic preamp)
(!!!!) (SINGLE) 12AU7A GE NOS 1963 copper grid posts (8.9/10.2ma)
(!!!!) (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) 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 5-Star black plates triple mica "U" getter 1957 used/good (1.9/1.8ma)
(!!!!) (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)
