(!!!!!) (Best Holland Pair 1967-1968) 12AX7=ECC83 Philips and Philips Miniwatt Holland ribbed plates "O" getter halo NOS 1967-1968 (1.3/1.5ma and 1.4/1.6ma) (close Gm)
(!!!!!) (Good Value Pair) 12BH7A RCA gray ribbed plates NOS and like new 1960's (7.3/8.6ma and 7.2/7.7ma)
(!!!!) (Best Value 1965) 12AX7 Philips Miniwatt Holland like new 1965 (Gm=1900/1700 and 1.5/1.2ma)
(!!!!) (Best Value 1965) 12AX7 Philips Miniwatt Holland like new 1965 (Gm=2000/2000 and 1.6/1.7ma) (Highest mA and Gm)
(!!!!) (Tungsol Single) JAN-12AY7 Tungsol like new 1960 era (2.9/2.7ma) (same Gm)
(!!!) (Best Single 1961) ECC82=12AU7 Miniwatt Holland NOS 1961 (9.8/9.2ma)
(!!!) (Best Single 1967) ECC82=12AU7 Philips Holland NOS 1967 (11.2/10.6ma) (same Gm)
(!!!) (Best Value Single) 12AX7=ECC83 FISHER HOLLAND large "O" getter halo 1960 used/good (Gm=1550/1600 and .9/1.0ma)
(!!!) (Best Value Single) 12AX7=ECC83 FISHER HOLLAND large "O" getter halo 1961 used/good (Gm=1500/1600 and .9/.9ma)
(!!!) (Best Value Single) 12BH7A Sylvania branded GE black oval plates "U" getter 1950's tilted glass (11.0/14.2ma)
(!!!) (Good Value) 12AX7A RCA gray ribbed plates "O" getter halo NOS 1973 (1.0/0.9mA and Gm=1400/1550)
(!!!) (Good Value) 12AX7A RCA gray ribbed plates "O" getter halo NOS 1974 (0.8/1.0mA and Gm=1350/1550) (Fender, McIntosh)
(!!!) (Recommended single) 12AT7 Brimar UK black plates "O" getter halo copper grid posts NOS 1957 (16.0/15.2ma)
(!!) (Best Single) 12AU7A Westinghouse gray plates "O" getter halo 1960's NOS (10.6/11.2ma)
(!!) (Best Single) 5687 Tungsol rebranded CBS black plates "U" getter NOS 1950's (38/48ma)
(!!) 5751 Sylvania misbranded 12AX7WA NOS 1960's (1.9/1.9ma)
5670=2C51 GE black plates "D" getter halo used/good 1950's (7.2/8.0ma) (same Gm)
