* (read review) 6072 GE 5 star triple mica black plates "O" getter halo 1962
5693 GE used/like new 1959 (2.9ma)
5693 RCA branded Raytheon used good 1960 (2.2ma)
5693 RCA branded Tungsol used good 1950's (2.6ma)
5693 RCA used good 1958 (2.4ma)
5840=EF732 GE NOS 1953 (5.3ma) (Soundelux, Peluso, Brauner)
5840=EF732 GE NOS 1965 (5.5ma) (Soundelux, Peluso, Brauner)
5840=EF732 Raytheon NOS 1960's (4.7ma)
5840W=EF732 Sylvania NOS 1970's (5.2ma)
