(!) (Pair) 404A Western Electric used/good 1963-1969 (16.5ma and 17.6ma)
(!) (PAIR) 5BQ7A GE gray plates NOS large "U" getter halo 1961 -1964
(!) 12AU7 Tungsol gray ribbed plates NOS square or "D" getter halo 1954 in white box (8.2/8.6ma)
(microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1956 (36/41ma)
(microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1957 (31/31ma)
(read review) 12AY7 GE branded RCA gray plates "D" getter NOS 1954 (2.3/2.9ma)
(Recommended Single) 5U4GA GE "D" getter NOS 1955 slightly tilted glass (58/40 and 59/50)
(slightly microphonic tube) 12AU7 RCA tall black ribbed plates "D" getter halo tests like new 1950's (9.4/10.0ma)
(slightly microphonic tube) 12AU7A RCA tall black ribbed plates "D" getter halo used/good 1950's (8.2/8.8ma)
(slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates "D" getter halo tests like new 1950's (9.6/10.4ma)
(slightly microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1956 (40.5/45.5ma)
(slightly microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1957 (34.5/36.5ma)
12AZ7 GE black plates "D" getter halo NOS 1955 (11ma/7.5ma)
12X4 CBS black plates "O" getter NOS 1960 (48/40 and 50/40)
12X4 RCA "D" getter NOS 1961 (47/40 and 48/40)
12X4 RCA "O" getter NOS 1963 (46/40 and 46/40)
2C51=396A GE "D" getter NOS 1950's rebranded United National 396A in 1987 (13.6/7.3ma)
5670=2C51 GE black plates "D" getter halo used/good 1950's (7.2/8.0ma) (same Gm)
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)
