(!!!!!) (Best Sylvania Pair) 12BH7A Sylvania gray pinched plates NOS 1970's (9.8/10.4ma and 10/10.4ma) 1-2% matched
(!!!!!) (Recommended Pair) 12BH7A GE gray oval plates "O" getter 1963 (12/12.5ma and 12/14ma)
(!!!!!) (Recommended Pair) 12BH7A GE NOS 1970-1976 (8.6/9.0ma and 8.6/9.6ma) 1-3% matched
(!!!!!) (Recommended Pair) 12BH7A GE NOS 1980-1985 1-3% matched (10.0/11.0ma and 10.0/10.2ma) 1-2% matched
(!!!!) (Best 12BH7A 1960 era) 12BH7A Sylvania gray oval plates "square=D" getter halo NOS 1960 era (9.6/9.8ma)
(!!!!) (Best Single) 12BH7A Sylvania NOS pinched plates 1970 era (10.3/10.4ma) 1-2% section balance
(!!!!) (Best Value Pair) 12BH7A Sylvania branded Philips NOS pinched plates 1982 (7.8/8.8ma and 8.2/8.8ma) (Same Gm) (Art Audio, Quicksilver, Rogue, Universal Audio)
(!!!!) (Best Value Pair) 12BH7A Sylvania branded Philips NOS pinched plates 1982 (8.4/9.4ma and 8.7/9.2ma) (Same Gm) (Art Audio, Quicksilver, Rogue, Universal Audio)
(!!!!) (Black Plate Single) 12BH7A RCA branded Westinghouse narrow black plates NOS "U" getter mid-1950's (7.2/8.4ma) (1st series made)
(!!!!) (Recommended Pair) 12BH7A GE NOS 1970's (9.2/9.4ma and 9.2/10.2ma) 1-5% matched
(!!!!) (Recommended Pair) 12BH7A Sylvania NOS 1960's (10.5/14.8ma and 11.2/17ma) (High mA and Gm)
(!!!!) (Recommended Pair) 12BH7A Sylvania NOS pinched plates 1960's - 1970's (11/12ma and 10.5/13ma)
(!!!!) (Recommended Single) 12BH7A GE NOS gray oval plates 1962 (8.8/10.0ma)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (10.2/10.6ma)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (9/9ma)
(!!!!) 12BH7A Sylvania pinched plates NOS 1966 (10.5/15.4ma)
(!!!) (Best Single) 12BH7A Sylvania branded "E/A" pinched plates NOS 1967 (8.6/8.8ma) 1-2% section balance
(!!!) (Best Single) 12BH7A Westinghouse gray ribbed plates NOS 1967 (10.6/10.8ma)
(!!!) (Recommended Pair 1950's) 12BH7A GE NOS gray oval plates "U" getter 1950's (8.5/9.5ma and 8.5/10ma) 1-3% matched (same Gm)
(!!!) (Recommended Pair) 12BH7A Sylvania NOS pinched plates 1960's (8.6/9.4ma and 8.2/9.2ma) (Same Gm) (Art Audio, Quicksilver, Rogue, Universla Audio)
