(slightly microphonic single) E182CC=7119 Amperex USA NOS 1981 (32/44ma)
(slightly microphonic) JAN-5751 Sylvania NOS 1973 (2.0/2.3ma)
6189W GE JAN NOS 1973 mica flake inside tube (9.0/9.2ma) 1-2% section balance
6AS7GA GE NOS 1970 era (77ma and 82ma)
6AS7GA GE NOS 1979 (105ma and 126ma)
6CB5A RCA NOS faded 1970 (113ma)
