(!!) 12AT7 Brimar black plates NOS/70-75% 1955 (5.6/5.8ma)
(!!) 12AT7 Brimar England black plates "U" getter used/good 1950's (6.0/6.4ma)
(!!) 12AU7A CBS black plates NOS 1960 era (9.5/11.8ma)
(!!) 12AU7A Toshiba Japan rebranded Raytheon gray ribbed plates NOS 1970's (10/11ma) (same Gm)
(!!) 12BH7A Philco Sylvania gray oval plates "O" getter halo used/good 1962 (6.5/7.3ma)
(!!) 412A Western Electric NOS 1965 (52/40 and 52/40)
(!!) 412A Western Electric NOS 1968 (52/40 and 53/40)
(!!) 412A Western Electric NOS 1969 (51/40 and 52/40)
(!!) 412A Western Electric NOS 1970 (53/40 and 53/40)
(!!) 5814A RCA black plates used/good 1964 (7.2/8.4ma)
(!!) 5U4GB RCA used/good "D" getter 1960 a few scratches on base (53/40 and 57/40)
(!!) 5V4G RCA NOS black plates 1955 (60/40 and 60/40)
(!!) 5V4GA RCA branded GE gray plates used/good 1967 (57/40 and 57/40)
(!!) 5V4GA RCA NOS gray plates 1971 slightly tilted glass (60/40 and 60/40)
(!!) 5V4GA Sylvania NOS 1957 (56/40 and 56/40)
(!!) 5Z3G National Union burgundy base NOS "D" getter 1951 (56/40 and 59/40)
(!!) 5Z3G National Union NOS "D" getter 1940's (52/40 and 54/40)
(!!) 6336 Chatham by Tungsol metal plates used 1950's 1st series made (54ma/85ma)
(!!) 6350 Sylvania black plates rebranded United "U" getter used/good 1950's (8.7/9.3ma)
(!!) 6SN7GTA Sylvania "chrome top" tall bottle used/good 1950 era (6ma/6ma) 1-2% section balance
