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(!!) 1629 RCA NOS 1961 bright eye
(!!) 45 RCA 1940's used/good (22.6ma) (strong Gm)
(!!) 5V4G RCA branded CBS black plates used/tests like new 1954 (62/40 and 62/40)
(!!) 5Z3G National Union burgundy base NOS "D" getter 1951 (56/40 and 59/40)
(!!) 6336 Chatham by Tungsol metal plates used 1950's 1st series made (54ma/85ma)
(!!) 6K6GT Philco by National Union coated glass 1953 (46.5ma)
(!!) 6K6GT Philco by Sylvabia NOS 1950-1951 (49ma)
(!!) 6SN7GTB Tungsol black plates tall bottle "U" getter used/75% 1950's (6.2/6.0ma)
(!!) 6X4 GE NOS gray plates "D" getter NOS 1961 (56/40 and 56/40)
(!!) 6X4 RCA NOS 1969 (50/40 and 51/40)
(!!) JAN-CHS-1629 Sylvania NOS 1940's bright eye
(!!) JAN-CRC-5V4G RCA black plates used/tests like new 1958 (62/40 and 62/40)
(!!) JG-12AY7 GE "D" getter 1956 used/good (2.1/2.3ma)
(!!) JTL-5687WA Tungsol bronze plates "O" getter used/good 1958 (30/30.5ma)
(!!) UY-227 RCA Balloon NOS 1930 era (4.3ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.7ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.8ma)
(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (4.0ma)
