6BQ5 RCA Magnavox gray plate used/good 1961 (44ma)
6L6GB GE Black Plate used/good 1957 (59ma)
6L6GB Sylvania Black Plate used/good 1955 faded top getter (57ma)
6L6GB Sylvania Black Plate used/good 1955 faded top getter (65ma) (high Ma and Gm)
6L6GC Sylvania gray plate used/tests like new 1960's (66ma)
6V6GT Ediswan UK NOS no printing (41ma)
6V6GT GE Delco used/good crack in base 1952 (36ma)
7027A RCA metal base gray plate NOS 1960 (74.2ma)
7189 Sylvania gray plate NOS 1960's (55ma)
7189 Sylvania gray plate NOS 1970 era (46ma)
7189 Westinghouse gray plate NOS 1960's (46ma)
800=VT-64 RCA Lab Development tube charcoal black plate used/good 1940 era (42ma, Gm=2150)
