(!!) (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
5Y4G GE NOS 1949 (48/40 and 51/40)
5Y4G National Union NOS 1950 era (51/40 and 58/40)
5Y4G Philco by Sylvania NOS 1943 (54/40 and 57/40)
5Y4G Philco by Sylvania NOS 1950 (53/40 and 56/40)
5Y4G Philco by Sylvania NOS 1950 (54/40 and 58/40)
5Y4G RCA used/good 1948 (48/40 and 53/40)
5Y4G Sylvania NOS 1940's (56/40 and 60/40)
5Y4GA RCA NOS 1963 (54/40 and 57/40)
5Y4GA RCA NOS 1971 (54/40 and 60/40)
5Y4GA Sylvania branded Zenith NOS 1960's (54/40 and 57/40)
5Y4GA Sylvania NOS 1960's (53/40 and 58/40)
