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(!!!!) (Single) 12BH7A Sylvania gray oval plates "O" getter NOS 1960 era (10.4/7.6ma)
(!!!!) (Single) 12BH7A Sylvania Silvertone gray oval plates large "O" getter halo 1960 era NOS (11.5/10.6ma)
(!!!!) (Single) 5751 GE NOS gray plates NOS 1981 (2.6/2.9ma) (Same Gm)
(!!!!) (Single) 6DJ8=ECC88 Mullard Holland NOS 1963 (16.6/20.6ma) (Nova)
(!!!!) (Slightly microhonic Single) 5751 RCA Hewlett Packard black plates NOS 1968 (2.4/2.6ma)
(!!!!) 6AK5 GE NOS 1973 (10.2ma)
(!!!) (#1 6BX7GT RCA single) 6BX7GT RCA NOS 1961 (41/48ma)
(!!!) (Best 0verall Single) GB-6350 Sylvania Gold Brand black plates NOS 1963 square "" getter (14/13ma)
(!!!) (Best Pair #1) 6AR6=6098 Tungsol oval plate NOS 1951-1952 (88ma and 85ma) (1st series made)
(!!!) (BEST PAIR #3) 6AN8A RCA NOS 1968 (13.5/15.2ma and 13.6/12.4ma)
(!!!) (Best Pair #4) 6J5GT Ken Rad black ribbed plates NOS 1942 (7.2ma and 7.2ma) 1-2% matched
(!!!) (Best Pair 1943) 6X5GT=VT-126B RCA black plates NOS 1943 (50-53/40 and 50-54/40)
(!!!) (Best Pair) 12BA6 Westinghouse NOS 1960 era (9.8ma / 10.4ma)
(!!!) (Best Pair) 5U4GA Raytheon double "D" getters NOS 1956 (57-60/40 and 59-60/40)
(!!!) (Best Pair) 6A7G Marconi Radiotron Canada NOS 1950 era (47/29 and 47/29)
(!!!) (BEST PAIR) 6AN8A RCA NOS 1968 (16.2/15.6ma and 16.5/13.4ma) (close Gm matching)
(!!!) (Best Pair) 6BL7GTA Sylvania branded GE NOS 1967-1968 (42.5/39.5ma and 40.2/43.2ma)
(!!!) (Best Single #1 1943) 6X5GT=VT-126B RCA black plates NOS 1943 (59/40 and 62/40) (Best Sound)
(!!!) (Best Single #1) 5881 Tungsol NOS 1954 (79.5ma)
(!!!) (Best Single #1) 6SN7GTB Silvertone by Sylvania NOS 1960 era (10.4ma and 10.8ma) 1-2% section balance (Same Gm)
