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(!!!) (Good Value Single) 6SN7GT Tungsol parallel gray plates NOS 1952 double large "O" mica (8.6/7.0ma) (rare)
(!!!) (Good Value Single) 6SN7GT Tungsol parallel gray plates NOS 1953 double large "O" mica - vertical crack in base (9.8/8.2ma) (rare)
(!!!) (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) JAN-5751 GE double mica gray plates NOS 1981-1982 (2.3/2.7ma)
(!!!) (Single) 12AU7=ECC82 Telefunken Germany <> bottom ribbed plates like new 1959 (9.6ma/11.8ma)
(!!!) (Single) 12AU7=ECC82 Telefunken Germany <> bottom smooth plates NOS 1968 (14.5ma/8.6ma)
(!!!) (Single) 12BH7A CBS Oval Black Plates "O" getter used/good 1960 (7.3/9.6ma)
(!!!) (single) ECC81=12AT7 Philips Miniwatt by Mullard UK like new "o" getter 1957 (8.2/7.6ma) (Mitcham plant)
(!!!) (slightly microphonic) ECC81=12AT7 Miniwatt by Mullard NOS 1970 (9.6/10.6ma)
(!!!) 418A Western Electric NOS 1952 original box (34ma)
(!!!) 418A Western Electric NOS 1952 original box (41ma)
(!!!) 5881 Tungsol used/good 1957 (58ma)
(!!) (1 PAIR) 12AV7 GE branded Westinghouse NOS 1963 (15.6/17.8ma and 15/16.2ma)
(!!) (Best Single 1958) ECC189=6ES8 Amperex Holland "D" getter NOS 1958 (12.0/13.4ma)
(!!) (Best Value Holland 1959) 12AX7 ADZAM Holland NOS 1959 large "O" getter halo (.8/1.1ma and Gm=1400/1600)
(!!) (Single) AZ11 Philips Miniwatt by Mullard NOS 1963
