(!!!!) (BEST PAIR) 5U4GB Raytheon NOS "O" getters 1962 (59-62/40 and 60-62/40)
(!!!!) (Best Pair) 5Y3GT Philips Holland NOS 1960's (60-64/40 and 60-65/40)
(!!!!) (BEST PAIR) 6DJ8 Sylvania branded GE NOS 1961-1962 (21.6/23ma and 21.5/22ma)
(!!!!) (BEST PAIR) 6EU7 GE NOS 1969 same date codes (40-46/32 and 42-46/32)
(!!!!) (Best Pair) 6EU7 RCA NOS 1967 (57-50/32 and 52/56/32)
(!!!!) (Best Pair) 6SN7GTB GE NOS 1962-1964 (7.0/7.2ma and 7.6/7.3ma) (smooth) (Schiit Freya, Rogue)
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950 (1.0ma and 1.0ma) 1-2% matched **
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950-1953 (1.0ma and 1.0ma) 1% matched **
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1953 (1.0ma and 1.0ma) 1% matched **
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1953 (1.1ma and 1.2ma) (Highest mA) **
(!!!!) (Best Pair) 7N7 Sylvania branded RCA 1960 era (10.4/10ma and 10.6/9.8ma) (High Gm) 1-3% matched (strong pair)
(!!!!) (Best Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 test like new faded printing (2.5/2.2ma and 2.4/2.8ma)
(!!!!) (Best Pair) CV378=GZ37 Mullard NOS 1966 (50-51/40 x 2 tubes) 1% matched
(!!!!) (Best Quad) 6L6GT=6n3C Russian NOS 1982 in white boxes (68.5/69/69.5/70.5ma)
(!!!!) (Best Quad) 6L6GT=6n3C Russian NOS 1982 in white boxes (72/72/72/73ma)
(!!!!) (Best Quad) 6L6GT=6n3C Russian NOS 1982 in white boxes (73.5/74/74.5/74.5ma)
(!!!!) (BEST RCA PAIR) 6EU7 RCA NOS 1965 (52-57/32 and 51-55/32)
(!!!!) (BEST RUSSIAN PAIR) 6L6GC=6n3CE Russian NOS 1990 coin/wafer base original boxes (61.5ma and 63ma) (Leben, Fender)
(!!!!) (BEST SIEMENS PAIR) EL84 Siemens Halske Germany NOS 1969 (47.5ma and 50.4ma)
(!!!!) (BEST SIEMENS PAIR) EL84 Siemens Halske Germany NOS 1969 (57.5ma and 60ma)
