(!!!) (Best Sylvania Pair) 6Y6GA Sylvania NOS "D" getters same build (64ma and 65ma)
(!!) (2nd Best RCA Pair) 6Y6GA RCA clear top black plate 1971-1973 (72.5ma and 70ma)
(!!) (Best RCA Pair) 6Y6GA RCA clear top black plate 1965 (67.5ma and 68ma)
(!!) (Recommended Pair) 6Y6GA Sylvania NOS same build (56.6ma and 57ma)
6Y6GT GE NOS 1960's (85ma)
6Y6GT RCA NOS 1964 (66ma)
