5881 Tungsol like new - guide pin broken off - 1957 (68.2ma)
5881 Tungsol rebranded GE used/very good 1950's (74.5ma)
5920=E90CC Amperex PQ Holland 1968 (6.8/6.8ma)
5AS4A Westinghouse "D" getter halo 1960-1965 (58/40 and 58/50)
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)
5R4GYB Sylvania NOS 1970's (52/40 and 49/40)
5U4GB Raytheon used/good 1960 era (54/40 and 54/40)
5U4GB RCA BALDWIN used/good 1962 glass slightly tilted in base (53/40 and 53/40)
5U4GB Sylvania Canada NOS 1960's (61/40 and 64/40) (similar build to RCA)
6240G Luxman by NEC Japan NOS 1960's (6.3/7.4ma)
6240G Luxman by NEC Japan NOS 1960's (6.7/8.0ma)
6350 RCA NOS "O" getter NOS 1960's (8.0/9.2ma)
6384 Tungsol used/good 1960's (63.5ma)
6973 Sylvania gray plate NOS 1970's (61ma)
6AR6 Raytheon black plate used/good 1952 (67ma)
6AW8A GE branded Westinghouse NOS 1964 (3.8/24ma)
6AW8A GE NOS 1976 (4.9/21ma)
6BA6 CBS tests like new (11ma)
