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(!) (SINGLE) 5692 RCA RED BASE rebranded GL-5692 GE used/good 1949 (8.2/7.6ma)
(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!) (SINGLE) 5U4GB RCA used/strong 1967 (56/40 and 61/40)
(!) (Single) 6L6G Sylvania branded Raytheon coated glass used/good 1940's (57ma)
(!) (Single) 6L6G Sylvania branded RCA coated glass used/good 1947 (56ma)
(!) (SINGLE) 6L6GB RCA Baldwin gray plate used/good 1959 (65ma)
(!) (SINGLE) 6SL7GT RCA round black plates NOS 1970 (2.0/2.1ma)
(!) (SINGLE) 6SN7GT Westinghouse USA black plates NOS 1950 era (6.4/6.8ma)
(!) (SINGLE) 7027A RCA NOS 1968 (64ma)
(!) (SINGLE) 7027A RCA NOS 1968 (85ma)
(!) (slightly microphonic) 6SL7GT=VT-229 RCA round black plates like new 1942-1945 era (2.4/2.6ma)
(!) (slightly microphonic) JAN-CRC-6SL7GT RCA NOS black plates 1951 tilted glass (2.0/2.2ma)
(!) (slightly micrphinic single) 12AT7 RCA black plates NOS D getter halo 1959 (12.2/10ma)
(!) 0B2=108C1 Valvo Germany like new in white boxes 1960 era (neon gas)
(!) 12AT7 East Germany branded "M" Mühlhausen NOS 1970's (8.4/9.0ma)
(!) 12HG7=12GN7A GE USA NOS (52ma and 56ma)
(!) 12HG7=12GN7A GE USA NOS (62ma and 66ma)
(!) 12HG7=12GN7A GE USA NOS (71ma and 68ma)
(!) 201A Aristocrat NOS 1930's (2.7ma and Gm=900)
(!) 30 Cunningham NOS 1940's original box (2.7ma)