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(!!) (Best Pair) 5V4GA GE NOS "D" getter 1962 and 1976 same build (60-60/40 and 60-61/40)
(!!) (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 Pair) 6A7G Marconi Radiotron Canada NOS 1950 era
(!!) (BEST PAIR) 6AE5GT Tungsol branded Delco NOS 1940's (8.5ma and 8.0ma)
(!!) (Best Pair) 6AF4 RCA NOS 1970's (23.5ma and 23.8ma)
(!!) (Best Pair) 6AG7 RCA NOS 1960's (27ma and 27.5ma)
(!!) (Best Pair) 6AL3=EY88 Rogers and RCA Holland 1968-1970 era Half-Wave HV Rectifier NOS (94/60 and 95/60)
(!!) (Best Pair) 6BA7 Raytheon NOS large "D" getter mid-1950's (66/40 and 66/40)
(!!) (Best Pair) 6BH6 RCA NOS 1970 era (7.7ma and 8ma)
(!!) (BEST PAIR) 6BQ6GTB=6CU6 Sylvania JAN NOS 1960's (56ma and 56ma)
(!!) (BEST PAIR) 6BQ6GTB=6CU6 Sylvania NOS 1960's (54ma and 54.5ma)
(!!) (BEST PAIR) 6BQ6GTB=6CU6 Sylvania NOS 1960's (62ma and 61.5ma)
(!!) (BEST PAIR) 6CS7 GE Canada black plates NOS 1964-1970 (20/11ma and 20.6/10ma)
(!!) (Best Pair) 6CW4 Sylvania NOS 1960's (120/60 and 120/60)
(!!) (Best Pair) 6CZ5 RCA black plate 1960's same build (49.5ma and 51ma)
(!!) (BEST PAIR) 6DQ6B Sylvania NOS 1960's same build (78ma and 80ma)
(!!) (BEST PAIR) 6EU7 GE NOS 1970-1978 (46-47/32 and 47-47/32) 1-2% matched
(!!) (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm)
(!!) (Best Pair) 6GJ7=ECF801 Dumont Japan NOS 1970's (80-81/60 and 80-81/60) 1-2% matched
