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(!!!) (Best RCA single #2) 5687 RCA bronze plates NOS 1976 (31.5/34ma)
(!!!) (Best Single) 6SN7GT Tungsol parallel gray plates NOS 1953 burgundy base double large "O" mica (9/10ma) (rare)
(!!!) (Best Single) GZ34 Philips Miniwatt by Mullard UK NOS 1965 small scratch on base (58/40 and 58/40)
(!!!) (Best Value Pair) 5751 GE double mica gray plates NOS 1979-1981 (2.4/2.5ma and 2.3/2.6ma)
(!!!) (BEST VALUE PAIR) 5881 Tungsol tests like new 1957 and 1963 with broken center guide pins - see photo (72.5ma and 68.2ma)
(!!!) (Best Value Single) 12AU7 Telefunken Germany <> bottom smooth plates used/tests like new 1960's (9.6ma/9.5ma)
(!!!) (Best Value Single) 12AX7=ECC83 SIEMENS HALSKE GERMANY used/good 1966 (0.8/0.9ma)
(!!!) (Best Value Single) 12AX7=ECC83 SIEMENS HALSKE GERMANY used/good 1967 (0.8/0.9ma)
(!!!) (Best Value) 12AU7=ECC82 Daystrom Mullard UK ribbed plates like new 1963 (11.6/10.2ma) (162 series) (smooth presentattion)
(!!!) (Best Value) 12AU7=ECC82 Daystrom Mullard UK ribbed plates like new 1963 (9.0/10.2ma) (162 series) (smooth presentattion)
(!!!) (Good Value Single) 12AU7 Philips Australia NOS 1970 era (9.6/8.8ma) (same internals as Holland made)
(!!!) (Good Value Single) 5U4G=VT-244 RCA used/good 1940's scratches on base (47/40 and 48/40)
(!!!) (Good Value Single) 6SN7GTB Tungsol tall bottle used/good 1960 era (7.5/7.5ma) 1% section balance
(!!!) (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) 12AU7A GE NOS 1965-1975 (8.8/8.8ma and 9.2/8.8ma) (Same Gm) (smooth and warm)
(!!!) (Recommended Pair) 12BZ7 RCA NOS 1964 and 1968 (1.8/1.8ma and 1.8/1.9ma)
(!!!) (Recommended Single) 12AU7A GE NOS 1963 (8.6/9.5ma)
(!!!) (Recommended Single) 12AX7=ECC83 Mullard UK old logo copper grid posts used/good 1963 (.9/1.0ma and Gm=1500/1500)
(!!!) (Recommended Single) 12BH7A CBS Oval Black Plates "O" getter NOS 1960 (11/12.5ma)
(!!!) (Recommended Single) JAN-5751 GE double mica gray plates NOS 1981-1982 (2.3/2.7ma)
