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6AK5 Westinghouse NOS 1970 (6.6ma)
6AU6WB Sylvania JAN NOS 1969 (8.1ma)
6X4 Philco used/good 1949 (46/40 and 47/40)
GL-6463 GE NOS "U" getter halo 1955 (11/12.8ma)
GL-6463 GE NOS "U" getter halo 1955 (14/20ma)
