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(!!) (BEST PAIR #1) JAN-5725W=6AS6 Philips by Sylvania black plate NOS 1982 (4.6ma and 4.6ma) (same Gm) 1-2% matched
(!!) (BEST PAIR #1) JAN-5725W=6AS6 Philips by Sylvania black plate NOS 1982 (6.5ma and 6.2ma)
(!!) (Best pair #2) 12AV7 GE gray plates U getter NOS 1963 (13.5/14.0ma and 12.6/13.3ma)
(!!) (Best Pair #2) 407A Western Electric D getter NOS 1966-1968 (40-40/26 and 42-43/26) 1-5% section balance
(!!) (Best Pair #2) 6AN8A RCA NOS 1970 - 1973 (18/14ma and 16/14ma)
(!!) (Best Pair #2) E90F=6BH6 Amperex Holland NOS 1963 (6.5/6.8ma) (Marantz 8B)
(!!) (BEST PAIR #2) EC86 Telefunken Germany <> bottom gold pins NOS 1960 (10.5ma and 11.2ma) (close Gm)
(!!) (Best pair #2) FAA-12AV7 Sylvania gray plates O getter NOS 1961 (15.8/16.2ma and 16.8/17.0ma)
(!!) (Best Pair #3) 6GJ7=ECF801 Mullard UK branded Amperex and RCA NOS 1970-1974 era (83-86/60 and 82-86/60)
(!!) (Best Pair #3) 6GJ7=ECF801 Mullard UK branded RCA NOS 1975-1976
(!!) (Best Pair) 12DT8 RCA gray plates NOS 1970's (11/12.2ma and 11/12.6ma)
(!!) (Best Pair) 12SL7GT GE NOS 1973 (2.9/2.9ma and 2.7/2.6ma)
(!!) (BEST PAIR) 272A Western Electric NOS "meshplate" 1961 and 1969 (6.1ma and 6.4ma)
(!!) (Best Pair) 5719 Sylvania Gold Brand NOS 1952 in white boxes (0.9ma/0.8ma) 1-3% matched
(!!) (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) 6BA7 Raytheon NOS large "D" getter mid-1950's (66/40 and 66/40)
(!!) (BEST PAIR) 6BM8 Sylvania NOS 1970's (1.8/45ma and 1.7/49ma)
