(!!) (Recommended Pair) 12B4A GE NOS 1960's - 1970's same build (30ma and 30.5ma)
(!!) (Recommended Pair) 272A Western Electric "meshplate" NOS and low hours/like new 1940's - 1951 (6.3ma and 6.4ma)
(!!) (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)
(!!) (Best Pair #3) 6AW8A GE NOS 1976 (3.1/3.3ma and 22/23ma) (Shindo)
(!!) (Recommended Pair) 6BL7GTA RCA NOS and like new 1960's (34/40ma and 38.6/39.8ma)
(!!) (Best Pair) 6GH8A GE by EI Yugoslavia NOS copper grid posts 1970's (13.6/13.5ma and 13.4/13.0ma)
(!!) (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) 6K11=6Q11 GE NOS 1979 (1 pair)
(!!) (Recommended Pair) 6KZ8 Sylvania branded Raytheon NOS
(!!) (Recommended Pair) ECC40 Philips NOS made by La Radiotechnique, Chartres/France 1969 (6.0/6.5ma and 6.1/6.8ma) 1-3% matched
(!!) (Recommended Pair) ECC40 Siemens NOS made by La Radiotechnique, Chartres/France 1967-1972 (6.1/6.4ma and 6.0/6.0ma)
(!!) (Recommended Single 1961) JLRV-12AT7WA=6201 GE Canada gray plates triple mica "U" getter NOS 1961 (9/12ma)
(!!) (Recommended Single) 311B Western Electric NOS 1967 glass slightly tilted, large getter, in white box (33ma)
(!!) (Recommended Single) 5814A=12AU7 Hyperlec Brive France (Holland clone) NOS 1970's rebranded National (11.8/12.2ma)
(!!) (Recommended Single) 6350 RCA NOS rebranded United triple mica "U" getter halo 1950's (9/9.6ma)
(!!) (Recommended Single) 6350 Sylvania black plate NOS "U" getter halo 1957 (9/10ma)
(!!) (Recommended Single) 6AK5 Tungsol gray plate NOS 1956 (8.3ma)
(!!) (Recommended SINGLE) 6C4WA GE JAN NOS 1972 (10.6ma)
