(!!!) (Recommended Single) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964 (8.2ma/8.2ma) 1-2% section balance
(!!!) (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) 12BH7A Westinghouse black ribbed plates "U" getter halo 1961 (8.5/10ma)
(!!!) (Recommended Single) JAN-5751 GE double mica gray plates NOS 1981-1982 (2.3/2.7ma)
(!!!) (Single 1963) 12AU7=ECC82 Mullard UK NOS 1963 faded printing (10.8/10.2ma)
(!!!) (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 7308 from 1963) 7308=E188CC Amperex PQ Holland Gold Pins used/very good 1963 (14.8ma/15.6ma)
(!!) (1 PAIR) 12AV7 GE branded Westinghouse NOS 1963 (15.6/17.8ma and 15/16.2ma)
(!!) (BEST PAIR) 12AV7 Raytheon NOS 1960 era (19/18.2ma and 18/20.4ma)
(!!) (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
(!!) (sold out) 6DJ8 Amperex Bugle Boy Holland NOS 1966 (18.6/19.0ma) (High Ma and Gm)
(!!) 396A=2C51 Western Electric used 1967 (9.6/7.0ma) (mis-matched Gm)
