(slightly microphonic single) 12BH7A Brimar England black ribbed plates NOS 1950's rebranded GE in 1967 (SW) (12.4/14.6ma)
(slightly microphonic) 12BH7 GE Zenith NOS "U" getter 1953 (10.0/10.6ma)
12BH7A Channel Master Japan by Hitachi NOS 1962 (10/14ma)
12BH7A Matsushita Japan branded Amperex Holland NOS 1970's (8.8ma/9.6ma)
ECC99 JJ (best identical substitute is 12BH7A RCA, Raytheon, Sylvania and GE)
