(!!!) (BEST SINGLE) JAN-6922 Sylvania NOS 1975 (17.6/18.3ma)
(!!!) (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) 5751 GE double mica gray plates NOS 1979-1981 (2.4/2.5ma and 2.3/2.6ma)
(!!!) (Best Value Pair) ECC84=6CW7 Ultron East Germany by RFT 1970's (10.5/11.5ma and 10.0/10.4ma)
(!!!) (Best Value Pair) ECC84=6CW7 Ultron East Germany by RFT 1970's (12.8/10.6ma and 11.8/11.6ma)
(!!!) (Good Value Pair) JHS-5687WA Sylvania used/very good 1960's faded printing (35.4/34.2ma and 37.0/36.5ma)
(!!!) (Good Value Single) 12AU7 EICO Holland used/good 1961 (8.0/9.6ma)
(!!!) (Recommended Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/1.9ma and 1.9/1.8ma) (same Gm)
(!!!) (Recommended Pair) 407A Western Electric used/good 1963-1964 (35-38/26 and 36-38/26)
(!!!) (Recommended Pair) 6DJ8=ECC88 Telefunken Germany <> bottom NOS branded Valvo 1960's (12/12.8ma and 13.8/12.6ma)
(!!!) (Recommended Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.2/2.4ma)
(!!!) (Recommended Single) JAN-5751 GE double mica gray plates NOS 1981-1982 (2.3/2.7ma)
(!!!) (Single) 6SN7GTA Westinghouse USA black plates NOS 1950's (7.0/7.6ma)
(!!) (Best Pair 1981) 412A Western Electric NOS "O" getter halo 1981 (53-53/40 x 2 tubes)
(!!) (Best Pair) 412A Western Electric NOS "D" getter halo 1959 (51-52/40 x 2 tubes)
(!!) (Good Value) 12AX7A/7025 Sylvania used/good 1970's (Gm=2300/1900)
(!!) (Recommended Pair) 448A Western Electric tipped top used/good 1965 same date codes (26ma and 27.5ma) (close Gm matching)
(!!) (Recommended Single) 6AN8A Sylvania NOS 1960's (16.4/11.5ma)
(!!) (Recommended Single) JG-5751 GE gray plates double mica "O" getter NOS 1965 (2.1/2.1ma)
