6L6G Hitachi Japan NOS rebranded Perma-Test NOS 1962 (73ma)
6L6G Ken Rad coated glass used/75% 1940's (50ma)
6L6G Sylvania branded Silvertone coated glass used/good 1947 (56ma)
6L6GA National Union used/good/80% 1940's (56.4ma)
6L6GA Sylvania SESCO used/good 1950 in white box (56.5ma)
6L6GA Sylvania used/good 1944 (79ma)
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 clear top NOS 1960's copper grid posts (68ma)
6L6GC Sylvania gray plate used/tests like new 1960's (66ma)
6LB6 GE branded Amperex NOS 1967 (65ma)
6LB6 GE branded Quasar NOS 1970 era (78ma)
6LB6 GE branded Zenith used/good (89ma)
6LB6 RCA used/good 1970 era (84ma)
6LF6 GE Zenith NOS 1978 (155ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
6LF6 Zenith NOS 1978 (101ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
6LQ6=6JE6C RCA black plate used/good 1968 (89ma)
6LQ6=6JE6C Sylvania used/good 1960's (108ma)
6LQ6=6JE6C Sylvania used/good 1970's (86ma)
