(!!!) 12BH7 GE Silvertone gray oval plates NOS "U" getter 1953 (8.2/8.0ma)
(!!) (Best Value Pair) 12BH7A Hitachi Japan branded Westinghouse NOS 1984 (11/9.3ma and 10.2/9.3ma) (McIntosh, Quicksilver, Art Audio, Wells)
12BH7A GE low hours like new 1960's (9.2/9.0ma) (Same Gm)
