(!!!!) (Best RCA Pair) VT-229=6SL7GT RCA round black plates NOS 1942 (2.8/2.9ma and 2.5/2.6ma)
(!!!!) (Best Single 1944) 6SL7GT Sylvania round black plates NOS 1944 (same build as VT-229) (2.1/2.3ma)
(!!!) (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 Value) VT-229=6SL7GT Sylvania round black plates used/like new 1940's (2.5/2.7ma) (Gm like new)
(!!) (2nd Best Pair) 6K6GT RCA NOS coated glass 1949 (38ma and 40ma)
284D Amperex brass base low emission display tube 1940 era
6L6GA Sylvania used/good 1944 (79ma)
