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(!!!!) (Best Overall Pair) 6L6GA Sylvania NOS 1945 (73.5ma and 74.6ma)
(!!!) (Best Pair) 1625 National Union NOS 1944 (90/40 x 2 tubes)
(!!!) (BEST PAIR) JAN-CYS-1616=1616 Sperti, Inc. NOS made by RCA 1944 (Space Tech Labs power supply STR-104)
(!!) (Best Pair) JAN-CRP-6K6GT Raython NOS coated glass 1950 (49.6ma and 50.8ma) (same Gm)
(!!) (Best Pair) JAN-CRP-6K6GT Raython NOS coated glass 1950 (52.0ma and 53.5ma) (same Gm)
284D Amperex brass base low emission display tube 1940 era