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(!!) (Recommended Pair) 12AZ7A GE Admiral black plates NOS 1960 (8/9ma and 8/10ma) (McIntosh MC275)
(!!) (Recommended Pair) 12B4A GE NOS 1960's - 1970's same build (30ma and 30.5ma)
(!!) (Recommended Pair) 5879 RCA branded Raytheon NOS 1960's (2.2ma and 2.4ma)
(!!) (Recommended Pair) 6AC7=VT-112 RCA 1941-1942 used/very good (13/15.3ma) (close Gm)
(!!) (Recommended Pair) 6AE5GT Tungsol branded RCA NOS 1940's (6.7ma and 6.8ma)
(!!) (Recommended Pair) 6AG7 RCA NOS 1960's (30.6ma and 32ma)
(!!) (Recommended Pair) 6AG7 RCA NOS 1960's same date codes (27.5ma and 29.2ma)
(!!) (Recommended Pair) 6AG7Y RCA brown bottom NOS 1958-1964 (27.8ma and 28.8ma)
(!!) (Recommended Pair) 6CS7 GE Canada NOS black plates 1965-1969 (18/11.2ma and 20/9.6ma) (close Gm)
(!!) (Recommended Pair) 6DJ8 GE NOS 1974-1980 (13.5/14.2ma and 12.4/13.5ma)
(!!) (Recommended Pair) 6GK5=6FQ5A GE NOS 1968-1981 (10.4ma and 11.2ma)
(!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (17ma and 18ma) (Highest mA and Gm)
(!!) (Recommended Pair) 6J6A Tungsol NOS "D" getter 1961 (7.5/8.8ma and 7.8/9.2ma)
(!!) (Recommended Pair) 6KZ8 Sylvania branded Raytheon NOS
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1958 and 1970 (10.3ma and 11ma)
(!!) (Recommended Pair) 6SH7 GE metal can NOS 1976 (12ma and 13ma) **
(!!) (Recommended Pair) 6SK7 Sylvania NOS 1950 era (9.2ma and 9.0ma)
(!!) (Recommended Single 1961) JLRV-12AT7WA=6201 GE Canada gray plates triple mica "U" getter NOS 1961 (9/12ma)
(!!) (Recommended Single) 12BZ7 RCA gray plates NOS 1968 mica slightly tilted (2.1/2.2ma) (High Gm)
(!!) (Recommended Single) 5654=6AK5W Tungsol gray plate NOS 1950's (6.8ma)
