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(!!!!) (BEST PAIR #2) JAN-6005W GE NOS 1980-1981 (47.4ma and 47.8ma) 1-2% matched
(!!!!) (Best Pair #2) JAN-6528A Cetron USA test like new 1987-1989 (102/110mA and 104/106.5ma)
(!!!!) (Best Pair #3) 5670W GE NOS 1986 (7.8/8.8ma and 7.6/8.2ma) 1-5% matched
(!!!!) (Best Pair #3) 5670W GE NOS 1986 (8.4/7.2ma and 8.0/7.4ma) (Same Gm) 1-2% matched
(!!!!) (Best Pair #3) 5763 Sylvania JAN NOS 1974 (33ma and 34ma)
(!!!!) (Best Pair #3) 5881 Tungsol used/good 1960's (63.2ma and 66ma)
(!!!!) (Best Pair #3) 6973 RCA NOS NOS 1969 (37.0ma and 39.5ma)
(!!!!) (Best Pair #3) 6BQ5 GE NOS 1970's-1982 same build (51ma and 55.6ma)
(!!!!) (BEST PAIR #3) 6C4WA GE JAN NOS 1980-1981 (8.6/9.0ma) (Same Gm)
(!!!!) (BEST Pair #3) 6CW4 GE NOS 1974-1978 (105/60 and 107/60) (strong emission)
(!!!!) (BEST PAIR #3) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (18.8/16.3ma and 18.9/17.2ma)
(!!!!) (BEST PAIR #3) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (20.7/18.5ma and 18.2/21.9ma)
(!!!!) (Best Pair #3) 6EU7 RCA NOS 1967 (48-49/32 and 51-52/32)
(!!!!) (Best Pair #3) 6J5GT Ken Rad black ribbed plates NOS 1942 (8.4ma and 8.0ma) 1-3% matched (Same Gm)
(!!!!) (Best Pair #3) 6J5GT Raytheon black ribbed plate NOS 1940's tilted bottom mica (8.6ma and 8.2ma) (best value)
(!!!!) (Best Pair #3) 7247=12DW7 Mullard UK NOS rebranded RCA 1972 (1.0/11.4ma and 0.9/10.8ma) 1-3% matched
(!!!!) (Best Pair #3) 807 RCA black plate NOS 1969 (62ma and 59ma)
(!!!!) (Best Pair #3) E810F=7788 Amperex PQ USA NOS gold pins 1969-1973 (37ma and 37.5ma)
(!!!!) (Best Pair #3) EL34 Mullard branded Philips NOS XF4 1976-1979 (88.5ma and 89.2ma) (Same Gm)
(!!!!) (Best Pair #3) JAN-5842WA Raytheon NOS 1984-1985 (20.6ma and 20.8ma) 1-3% matched
