(!!!) (Best RCA Pair) 5879 RCA branded GE NOS 1974 (2.2ma and 2.0ma)
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 (2.5ma)
(!!) (Recommended Pair) 5879 RCA branded Raytheon triple mica D getter NOS early 1960's (1.8ma and 1.5ma)
(!!) (Recommended Pair) 5879 RCA branded Raytheon NOS 1960's (2.2ma and 2.4ma)
(!!) (Recommended Pair) 5879 RCA branded Raytheon triple mica D getter NOS 1960's (1.4ma and 1.4ma)
5879 RCA branded Raytheon chrome shield NOS 1970's (1.7ma)