(!!!!!) (Best 448A Pair) 448A Western Electric smooth top used/test like new 1965-1968 (42.5ma and 45.5ma) (Matched on Amplitrex)
(!!!!!) (Best Overall Pair) 311B Western Electric NOS 1956 and 1964 (35ma and 36ma)
(!!!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.7/1.7/1.7/1.7ma) 1-2% matched
(!!!!) (BEST PAIR) 408A Western Electric NOS 1953 and 1958 (97/60 and 96/60)
(!!!!) (Best Overall Pair) 407A Western Electric like new 1965-1966 (46-47/26 and 47-48/26) (Highest Testing Pair)
(!!!) (Recommended Pair) JW-5842=417A Western Electric "D" getter low hours/like new 1950's (27.6ma and 30.5ma) (Best Sonics)
(!!!!) (Best Pair) 102F Western Electric NOS 1967 large getters (1.0ma and 1.1ma) (High Ma and Gm)
(!!!!) (BEST PAIR) 309A Western Electric NOS 1960 (4.8ma and 5.1ma) (same Gm)
(!!!!) (Best Pair) 311B Amperex made in Russia NOS 1977 (34.2ma and 34.5ma) (very good construction)
(!!!!) (Best Pair 1960's) 417A Western Electric NOS 1966-1969 (28ma and 29.2ma)
(!!!!) (BEST PAIR) 417A Western Electric NOS 1980 (42.5ma and 43ma)
(!!!!) (Recommended Pair) 311B Western Electric NOS 1973 and 1975 (35.2ma and 36.4ma)
(!!!) (#1 286A) 286A Western Electric "top printing" NOS 1942-1945 (7.0ma)
(!!!) (Best tipped top pair) 448A Western Electric tipped top used/tests like new 1965 (35.5ma and 36.4ma) (Matched on Amplitrex)
(!!!) (2nd Best Pair) 311B Amperex made in Russia NOS 1977 (31.8ma and 33.2ma) (very good construction)
(!!!) (Best Single) 310A Western Electric large punch plate low hours/tests like new 1962 (6.5ma) (highest mA and Gm)
(!!!) (Best Single) 311B Western Electric NOS 1956 (31.6ma)
(!!!) (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