(!!) (Good Value Single) 12AZ7 Tungsol black plates "U" getter halo NOS 1950's (7.5ma/7.5ma)
(!!) (Recommended Single) 5U4GA GE "D" getter NOS 1955 (57/40 and 59/50)
(!!) (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)
(!!) 12AT7 Brimar black plates NOS/70-75% 1955 (5.6/5.8ma)
(!!) 403A=6AK5 Western Electric used/good 1970 (8.2ma)
(!!) 6AN8A Sylvania coated glass NOS 1960's (20.2/11.2ma)
(!!) 6AS7G RCA black plates used/good 1952 (100/140ma)
(!!) 6K6GT Channel Master Japan 1960's (50ma)
(!!) 6K6GT Sylvania NOS 1970 era (42.5ma)
(!!) 6SN7GTA Sylvania "chrome top" tall bottle used/good 1950 era (6ma/6ma) 1-2% section balance
(!) (BEST GZ32 SINGLE) GZ32 Miniwatt Dario France NOS 1956 (62/40 and 62/40) small rattle inside base
(!) (BEST GZ32 SINGLE) GZ32 Miniwatt Dario France NOS 1956 (63/40 and 63/40) small rattle inside base
(!) (BEST GZ32 SINGLE) GZ32 Miniwatt Dario France NOS 1956 (64/40 and 64/40) small rattle inside base
(!) (BEST GZ32 SINGLE) GZ32 Miniwatt Dario France NOS around 1955 (61/40 and 62/40) very small rattle inside base
(!) (BEST GZ32 SINGLE) GZ32 Miniwatt Dario France NOS around 1955 (62/40 and 62/40) small rattle inside base
(!) (Best Single) 407A Western Electric tests like new 1960 (42/26 and 50/26)
(!) (Recommended Single) GZ32 Miniwatt Dario France NOS 1955 (62/40 and 62/40) small rattle inside base
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1955 (78.8ma)
(Recommended Single) 5U4GA GE "D" getter NOS 1955 slightly tilted glass (58/40 and 59/50)
(slightly microphonic tube) 12AT7 Brimar UK black plates "D" getter halo copper grid posts used/good 1955 era (7.2/8.4ma)