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(!!) 12BH7A RCA gray plates used/good 1970 era (8/9ma)
(!!) 12BH7A RCA used/good/75% 1967 (7/6ma)
(!!) 12BH7A RCA used/very good 1960's (9.8/11.6ma)
(!!) 12BH7A Sylvania NOS pinched plates 1970's (7.4/8.8ma)
(!!) 12SN7GT Sylvania Philco chrome top black plates NOS 1956 (8.2/8.4ma)
(!!) 13EM7 RCA black base black plates NOS 1968 (2.0ma/28ma)
(!!) 1629 RCA NOS 1961 bright eye
(!!) 26 Cunningham NOS 1946 (5.4ma, Gm=1000)
(!!) 26 GE NOS 1946 (6.7ma, Gm=1200)
(!!) 26 RCA NOS 1946 (4.3ma, Gm=900)
(!!) 26 Super Silvertone by National Union NOS 1940's (5.7ma, Gm=1200)
(!!) 26 Tungsol NOS 1945 (4.4ma, Gm=1000)
(!!) 45 RCA 1940's used/good (22.6ma) (strong Gm)
(!!) 5842 Raytheon branded RCA NOS 1976 (20ma and Gm=20,000)
(!!) 5963=12AU7 RCA NOS 1963 (9.2/9.6ma)
(!!) 5R4GYB RCA like new 1963 a few oxide filament flakes inside tube slightly tilted glass (50/40 and 52/40)
(!!) 5R4GYB RCA rebranded Raytheon NOS 1960's (50/40 and 53/40)
(!!) 5R4GYB RCA used/very good 1961 (48/40 and 51/40)
(!!) 5V4G RCA branded CBS black plates used/tests like new 1954 (62/40 and 62/40)
(!!) 6336 Chatham by Tungsol metal plates used 1950's 1st series made (54ma/85ma)
