(!!!!!) (Best Overall Pair) 12BH7A Sylvania NOS 1960's - 1970 (10.6/10.8ma and 10/11ma) 1-3% matched
(!!!!!) (Best Pair) 12BH7A Raytheon Black Plates "D" getter NOS 1959 (8.5/13.5ma and 8.8/11.5ma)
(!!!!!) (Recommended GE Pair) 12BH7A GE gray oval plates NOS 1960-1965 (8.2/9.2ma and 8.0/8.5ma)
(!!!!!) (Recommended Pair) 12BH7A GE NOS gray oval plates large "O" getter halo 1960-1965 (9.5/10.7ma and 9.6/11.0ma) 1-3% matched
(!!!!!) (Recommended Pair) 12BH7A Sylvania NOS 1960's - 1970 (9/10ma and 9/10.4ma) 1-3% matched
(!!!!!) (Recommended Sylvania Pair) 12BH7A Sylvania NOS 1970 era (11/14.4ma and 10.6/13.6ma) (Highest Ma and Gm)
(!!!!!) (Recommended Sylvania Pair) 12BH7A Sylvania NOS 1970 era (9.4/9.4ma and 8.4/10.4ma)
(!!!!) (Best 12BH7 1954) 12BH7 Sylvania black oval plates "square=D" getter halo NOS 1954 (8.8/9.4ma)
(!!!!) (Best GE single 1960's) 12BH7A GE NOS gray oval plates "O" getter halo 1963 (13.0/15.4ma) (Highest Ma and Gm)
(!!!!) (Recommended PAIR) 12BH7A GE NOS 1970's (9.6/10.2ma and 9.4/9.8ma)
(!!!!) (Recommended Pair) 12BH7A GE NOS gray oval plates large "O" getter 1964-1965 (10.0/10.8ma/10.5/11.5ma)
(!!!) (Best GE Single 1958) 12BH7A GE NOS gray oval plates large "U" getter halo 1958 (8.2/9.6ma)
(!!!) (~ Best GE Single 1954 ~) 12BH7 GE NOS gray oval plates large "U" getter halo 1954 (9.5/11.2ma)
(!!) (Recommended Single) 12BH7A Raytheon Black Plates "D" getter NOS 1958 smaller top getter (10ma/14ma)
(!!) 12BH7A RCA gray plates used/good 1970 era (8/9ma)
(!) 12BH7A GE gray oval plates "O" getter halo used/good 1964 (7.2ma/8.5ma)
(!) 12BH7A Toshiba rebranded "Bell and Howell Schools" like new 1960's (9/10.4ma)
12BH7A Toshiba rebranded "Daystrom Nichimen" NOS "D" getter halo 1950's (8ma/8ma) 1% section balance
12BH7A Triad by Toshiba Japan used/good (8.8/10.2ma)
ECC99 JJ (best identical substitute is 12BH7A RCA, Raytheon, Sylvania and GE)
