(!!!!) (Single 1955 era) 12BH7A RCA narrow black plates used/very good "U" getter halo 1955 era (8.6/10ma) (1st series made) (rare)
(!!!!) (Good Value Pair) 12BH7A GE NOS gray oval plates "o" getter halo 1961-1965 (7.2/6.6ma and 8.4/6.8ma)
12BH7A Channel Master Japan by Hitachi NOS 1962 (10/14ma)
12BH7A Matsushita Japan branded Amperex Holland NOS 1970's (8.8ma/9.6ma)
(!!) 12BH7A RCA used/good/75% 1967 (7/6ma)
(!) (SINGLE) 12BH7A RCA used/very good 1960's (7.4/9.2ma)
(!!) (SINGLE 1953) 12BH7 GE NOS gray oval plates "U" getter 1953 NOS (9/12ma)
(!!!) (Recommended Single) 12BH7A Raytheon black oval plates "D" getter NOS 1950's (9.0ma/8.6ma)
(!!!!) (Best 12BH7A 1957) 12BH7A Sylvania gray oval plates "square=D" getter halo NOS 1957 (13.0/12.7ma)
(!!!) (Single) 12BH7A CBS Oval Black Plates "O" getter used/good 1960 (7.3/9.6ma)
(!!!!) (Single) 12BH7A GE gray oval plates NOS mid-1960's (11.5/16ma)
(!!!!) (Best Single) 12BH7A Sylvania rebranded GE black oval plates "U" getter NOS 1956 era (11.2/14ma)
(!!!!) 12BH7A Westinghouse gray ribbed plates used/good "U" getter 1960 era (8.4/11ma)
(!!!!) (Recommended Single 1953) 12BH7 Sylvania black oval plates "square=D" getter halo NOS 1953 reboxed (11.2/15.2ma)
(!!!!) (Recommended Single) 12BH7A Sylvania gray oval plates "O" getter halo NOS 1962 (10.2/11.8ma)
12BH7A GE gray oval plates used/good "U" getter 1950's (7.6/7.8ma)
ECC99 JJ (best identical substitute is 12BH7A RCA, Raytheon, Sylvania and GE)
(!!!) (Recommended Single) 12BH7A Westinghouse black ribbed plates "U" getter halo 1961 (8.5/10ma)
(!!!) (Recommended Single) 12BH7A CBS Oval Black Plates "O" getter NOS 1960 (11/12.5ma)
(!!!) (Recommended Pair) 12BH7A GE NOS gray oval plates mid-1960's (9.5/13.5ma and 9.4/10.5ma) (close Gm matching)
