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(!!!) 5U4GB GE NOS 1971 (58/40 and 61/40)
(!!!) 6CA4=EZ81 GE NOS 1980 (55/40 and 55/40)
(!!!) 6X5GT RCA black plates NOS 1953 (50/40 and 54/40)
(!!!) 6X5GT RCA NOS 1953 (52/40 and 62/40)
(!!!) 80 RCA used/strong new 1946 (54/40 and 58/40)
(!!!) 80 RCA Victor NOS 1948 (56/40 and 58/40)
(!!!) CX-380 Cunningham Balloon used/good 1930 era (46/40 and 56/40)
(!!!) FAA-6X4WA Sylvania NOS 1965 (55/40 and 57/40)
(!!!) UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare)
(!!) (#1 81 Balloon) 81 Arcturus Balloon used/tests like new engraved base 1930's like new condition (53/40)
(!!) (Best Overall Pair) 5Y4G Sylvania NOS 1951 (57-52/40 and 56-52/40) (rare)
(!!) (Best Overall Single) 393A Western Electric like new 1940's
(!!) (BEST PAIR #2) 6H6 GE NOS 1972-1974 (46-48/40 and 45-48/40)
(!!) (BEST PAIR #3) 6H6 GE NOS 1970-1977 (44-47/40 and 44-47/40)
(!!) (Best Pair 1981) 412A Western Electric NOS "O" getter halo 1981 (53-53/40 x 2 tubes)
(!!) (Best Pair) 412A Western Electric NOS "D" getter halo 1959 (51-52/40 x 2 tubes)
(!!) (Best Pair) 5726=6AL5 Sylvania JAN NOS 1980 (45-46/40 and 46-46/40)
(!!) (Best Pair) 5V4GA GE NOS "D" getter 1962 and 1976 same build (60-60/40 and 60-61/40)
(!!) (BEST PAIR) 5Y4GA RCA NOS 1969 same date codes (52-56/40 and 52-57/40)
