5879 RCA triple mica “”D”” getter halo used/tests like new (1.7ma)

1 tube) 5879 RCA triple mica “”D”” getter halo used/tests like new

1.7ma

Gm=1000

– Divided by 13 RSA 31 amp
– Divided by 13 JRT 9/15
– AMPEX 620/621