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(!!!!) (Best Pair #2) 5670W GE NOS 1986 (9.4/11ma and 9.8/11.6ma) 1-5% matched (Highest Ma and Gm)
(!!!!) (Single) E88CC=6922 Mullard Holland SQ used/good 1965 (10.2/9.5ma) (3D MIDS) (Good Gm)
(READ REVIEW) 6AC7 RCA NOS 1957-1965 (9.2/9.2ma) 1-2% matched
(BEST VALUE) ECC808=6KX8 Telefunken Diamond Bottom <> NOS 1969 faded printing from rubbing inside box (0.8/1.0ma Gm=1350/1500)
6CS7 GE branded Tungsol NOS 1961 era (21/11ma)
(!!!) (Recommended Pair) 6FQ7 GE NOS 1970's (7.2/9.5ma and 6.5/9.4ma)
(!) 5687 Raytheon part bronze part black plates used/tests like new 1960 (33/38ma)
6DR7 GE NOS 1965 (1.1ma/36ma)
(!!!) (Recommended Pair) 12A National Union NOS 1950 era different shape top mica (8.5ma and 8.1ma)
(!!!!) (Best Single) JAN-5687WB GE NOS 1972 (34.6/35.6ma)
7B7 Tungsol NOS 1949
7C6 Sylvania branded RCA used/like new 1956 (98/60)
(!!!) (Best Pair) 6BL7GTA Sylvania branded GE NOS 1967-1968 (42.5/39.5ma and 40.2/43.2ma)
(!!) (Single) 6350 GE black ribbed plates NOS 1968 (9.0/9.2ma)
(!!!) (Recommended Single) 6SN7GTB Westinghouse gray plates NOS 1965 (8.6/7.4ma)
7054=12BY7 RCA NOS (0 in stock)
7056 US Brands NOS (40 in stock)
7058 RCA branded Dumont NOS 1963 (Gm=1600/1720)
(!!) (PAIR) 713A Western Electric by Tungsol NOS 1942-1943 (6.2ma and 6.3ma)
7193=2C22 Ken Rad NOS 1943 (sold)
