(!!!!) (Best Pair) 1L6 Sylvania NOS 1950 same date codes (20/16 and 19/16)
(!!!!) (Best Pair) 6FQ7 GE NOS 1960's (7.5/8.0ma and 7.0/7.2ma) (Close Gm) 1-5% matched
(!!!!) (Best Pair) 6FQ7 GE NOS 1970's rebranded Westinghouse 1985 (7.0/7.2ma and 7.2/7.4ma) (same Gm) (1-3% matched)
(!!!!) (Best Pair) 6FQ7 Zenith by GE NOS 1977 (7.2/8.0ma and 7.0/7.8ma)
(!!!!) (Recommended GE Pair) 6FQ7 Zenith by GE NOS 1977 1-3% matched (7.0/7.6m and 6.8/7.5ma)
(!!!!) (Recommended Pair) 6FQ7 Zenith by GE NOS 1977 (6.5/10.6ma and 6.7/9.2ma)
(!!!) (Best Overall Pair) 6JS6C Sylvania Zenith and Sylvania NOS same build (104ma and 107ma)
(!!!) 12BH7A RCA branded Zenith NOS 1970 era (10/13.2ma)
(!!!) 1L6 Sylvania branded GE NOS 1973 original box (115/60)
(!!!) 1L6 Sylvania NOS 1970 era (112/60)
(!!!) 1L6 Tungsol NOS 1954 (113/60)
(!!) (Best Overall Pair) 5Y4G Sylvania NOS 1951 (57-52/40 and 56-52/40) (rare)
(!!) (BEST PAIR) 5Y4GA RCA NOS 1969 same date codes (52-56/40 and 52-57/40)
(!!) (BEST PAIR) 5Y4GA Sylvania NOS 1960's same date codes (54-59/40 and 53-58/40)
(!!) (Best RCA Pair) 5Y4G RCA NOS 1946 (51-53/40 and 52-54/40) (rare) closely matched
(!!) (Recommended Pair) 6JS6C GE Realistic and GE NOS 1970's - 1981 (70ma and 76ma)
(!) (1 Pair) 31 Sylvania rebranded Zenith NOS 1940's (12.8ma and 13.6ma)
(!) (Best Value Single) 5U4G Westinghouse by RCA used/good 1948 some oxide flakes inside tube (50/40 and 50/40)
(!) (Recommended Pair) 6BL7GTA Sylvania Zenith 1963 and 6BL7GT Sylvania 1960 era NOS (38.5/34ma and 33/37ma)
(!) (Recommended Single) 12BY7A Tungsol NOS 1960 era (21ma)
