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6BQ5 RCA Magnavox gray plate used/good 1961 (44ma)
6BQ5 RCA used/good 1970 (40ma)
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)
6V6GT GE Delco used/good crack in base 1952 (36ma)
7027A RCA metal base gray plate NOS 1960 (74.2ma)
7027A Sylvania used/75% (58.5ma)
7189 CBS gray plate like new 1960 era (46ma)
7189 Sylvania gray plate NOS 1970 era (46ma)
800=VT-64 RCA Lab Development tube charcoal black plate used/good 1940 era (42ma, Gm=2150)
