(!!!) (2nd Best Pair) 311B Amperex made in Russia NOS 1977 (31.8ma and 33.2ma) (very good construction)
(!!!) (3rd Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.6/2.0ma and 1.6/2.0ma) 1% matched
(!!!) (4th Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.7/1.8ma and 1.8/1.9ma)
(!!!) (Best Overall Pair) 286A Western Electric "top printing" mesh-plate NOS 1942-1945 (6.4ma and 6.6ma)
(!!!) (Best Overall Pair) 429A Western Electric NOS "D" getter halo (6126=1961)
(!!!) (Best Pair) 244A Western Electric NOS ST-14 "Engraved Base" 1930's - 1940 (4.1ma and 5ma) (close Gm)
(!!!) (Best Pair) 407A Western Electric NOS "O" getter 1979-1983 (46-42/26 and 46-42/26)
(!!!) (Best Pair) 420A Western Electric NOS 1979 (1.6/1.9ma and 1.6/1.9ma)
(!!!) (Best Pair) 713A Western Electric by Tungsol NOS 1942-1943 (7.1ma and 7.0ma) (713A=717A with black base)
(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.8/1.9ma and 1.8/2.0ma)
(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.9/2.1ma and 2.1/2.1ma)
(!!!) (Best Single) 310A Western Electric large punch plate low hours/tests like new 1962 (6.5ma) (highest mA and Gm)
(!!!) (Best Single) JW-6028=408A Western Electric "D" getter NOS 1954 (105/60)
(!!!) (Best tipped top pair) 448A Western Electric tipped top used/tests like new 1965 (35.5ma and 36.4ma) (Matched on Amplitrex)
(!!!) (Best Value Pair) 717A=VT-269 Western Electric by Tungsol low hours/like new mid-1940's in white boxes (9.2ma and 10.2ma)
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.5/1.5/1.5/1.5ma) 1-2% matched
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.6/1.6/1.6/1.5ma) 1-2% matched
(!!!) (PAIR) VT-25-A Sylvania NOS and like new 1940's (34ma and 38.2ma)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.5ma and 1.5ma)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)
