(!!!) (#1 5879 Sylvania Pair) 5879 Sylvania branded RCA NOS 1970's (2.3ma and 2.3ma)
5879 RCA low hours/tests like new 1960's (1.8ma)
5879 RCA rebranded GE NOS 1960-1970 (1.6ma)
5879 RCA triple mica "D" getter halo used/tests like new (1.7ma)
5879 RCA triple mica "D" getter halo used/tests like new (2.0ma)
5879 RCA triple mica "D" getter NOS around 1960 (1.4ma)
5879 Sylvania branded RCA NOS 1970's (1.7ma)
5879 Sylvania branded RCA NOS 1977 (1.8ma)
