5AS4A GE branded Tungsol "D" getter halo 1960 era (63/40 and 68/40)
5AS4A GE branded Tungsol gray plates D getter NOS 1960 era (60/40 and 60/40)
5AS4A Tungsol black plates NOS "D" getter halo 1950's (56/40 and 58/40)
5BQ7A GE black plates "U" getter 1961 (10.8/7.0ma)
5BQ7A GE Dumont gray plates "O" getter 1973 (12.8/8.2ma)
5BQ7A RCA branded Raytheon black plates "D" getter faded printing 1950's (14.0/13.6ma)
5U4GB Hitachi Japan NOS branded Marconi 1960's a few very small vertical scratches on base (57/40 and 58/40)
5U4GB Raytheon used/good 1960 era (54/40 and 54/40)
5Y3GT Sylvania used/good 1955 (46/40 and 51/40)
5Y4G RCA used/good 1948 (48/40 and 53/40)
5Y4GA RCA NOS 1963 (54/40 and 57/40)
5Y4GA RCA NOS 1971 (54/40 and 60/40)
5Y4GA Sylvania branded Zenith NOS 1960's (54/40 and 57/40)
5Y4GA Sylvania NOS 1960's (53/40 and 58/40)
6286 Raytheon NOS 1959-1961
6336A GE used/good 1960 era (74/79ma)
6336A RCA branded GE like new 1966 (88ma/110ma) ***
6336A RCA branded GE used/good 1960 (61/79ma)
6336A RCA NOS 1971 (55/70ma)
6336A RCA used/good 1968 (81/120ma) ***
