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(!!) (Best Value Single 1961) 5687WA Tungsol bronze plates "O" getter halo used/very good 1961 (33.4/34.8ma)
(!!) (#1 5847 Amperex Pair) JAN-5847A=404A Amperex USA Gold Pins NOS 1981 (30.5ma and 32ma)
(!!) (#1 5847 Amperex Pair) JAN-5847A=404A Amperex USA Gold Pins NOS 1981 (37ma and 39ma)
(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!!!!) (Best Single) 5965A GE NOS 1976 (16.8/17.0ma) 1-2% section balance
(!!!!) (Best Pair #1) E80CC=6085 Philips and RTC Holland gold pins NOS 1961-1972 (6.3/6.8ma and 6.1/6.9ma) 1-3% matched
(!!) (Best Tungsol #1) 6SL7GT Tungsol gray ribbed plates NOS 1950's (2.3/2.5ma) (Same Gm)
(!!!) (Best Pair) 6AF4A Sylvania NOS 1965 (22.5ma and 22.8ma)
(!!) (Best Pair #2) 6AN8A RCA NOS 1970 - 1973 (18/14ma and 16/14ma)
(!!) (Best Value Single) ECC85=6AQ8 RCA Canada NOS 1970's (12.6/11.0ma)
(!!) (Good Value Single) ECF80 VALVO FRANCE (La Radiotechnique) NOS 1962
(!!!) (Recommended Pair) 6DZ4 GE NOS 1960's (21ma and 22ma)
(!!) (#1 6HM5 Japan Pair) 6HA5=6HM5 Hitachi Japan branded RCA NOS 1970's (14.5ma and 15ma) (Highest Ma and Gm)
(!!) (Pair) 6SJ7 GE metal can NOS 1977 (2.4ma and 2.3ma) (same Gm)
(!!) 7199 RCA Black Plates NOS around 1960 era (9/7.8ma)
(READ REVIEW) 7308=E188CC Philips UK by Mullard Gold Pins NOS 1970 (13.2ma/9.6ma)
(!!) (Best Pair) E90F=6BH6 Amperex Holland NOS 1963 (7.3/7.5ma) (Marantz 8B)
(!!) (Best Single #2) 6SN7GTB Sylvania branded RCA NOS 1963 (8.0ma/8.8ma)
(!!) (Pair) 6BL7GTA Sylvania branded GE NOS 1968 (37.5/38.8ma and 41/35.6ma)
(!!!!) (Best Pair #2) ECL82 Philips Holland NOS 1959-1966 (2.1/33ma and 2.1/33ma) 1-2% matched