(!!!) (Best Value Single) 45 Tungsol tests like new 1940's (40ma)
(!!!) (Best Value) VT-229=6SL7GT Sylvania round black plates used/like new 1940's (2.5/2.7ma) (Gm like new)
(!!!) (PAIR) 6SL7GT Sylvania round gray plates NOS 1952 (2.1/2.4ma and 2.3/2.5ma) (same Gm)
(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40)
(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (57-61/40 and 57-62/40)
(!!!) (Recommended Single) 5Z3G RCA NOS 1954 (58/40 and 60/40)
(!!!) (Recommended Single) 5Z3G RCA NOS 1957 (57/40 and 58/40)
(!!!) (Recommended Single) 5Z3G RCA NOS 1971 (56/40 and 58/40)
(!!!) (Recommended Single) 6SL7GT Ken Rad NOS 1945 era (2.1/2.3ma)
(!!!) 6SL7GT Sylvania round gray plates like new 1951 (3.7/3.6ma) (Highest mA and Gm)
(!!) (Good Value Pair) 71A Sylvania branded Hytron NOS and Sylvania branded Ken Rad like new 1946-1947 (21.5ma and 21.8ma)
(!!) (Recommended Pair) JAN-6V6GT Sylvania NOS 1976-1979 (41ma and 38ma)
(!!) (Single) 71A Tungsol NOS 1940's in white box (23.6ma)
(!!) (~ Recommended ~) VT-107A=JAN-CHS-6V6GT Sylvania black plate / gray coated glass NOS 1945 (35ma)
(!!) 6K6GT Channel Master Japan 1960's (50ma)
(!!) 6K6GT Sylvania NOS 1970 era (42.5ma)
(!!) 6V6GT=VT-107A National Union coated glass NOS 1945 (37ma)
(!!) 71A Tungsol NOS 1946-1947 (17.5ma)
(slightly microphonic) JAN-CHS-6SN7W Sylvania "SHORT BOTTLE" used/good 1945 (7.0/7.6ma)
2J31 Raytheon Magnetron like new condition sold (as-is) (sold)
