(!!!) (Recommended Single) 12AT7 GE NOS 1981 (7.0/6.8ma)
(!!!) (Recommended Single) 12AT7 Tungsol rebranded AKRAD "U" getter NOS 1956 (6.2/6.6ma)
(!!!) (Recommended Single) 12AT7=ECC81 Mullard shiled logo used/tests like new 1963 (15.8/14.8ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1975 (8.4ma/6.8ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1981 (8.4ma/6.8ma)
(!!!) (Single) E81CC=12AT7WA Siemens Munich Germany NOS 1975 (10.8/9.3ma)
(!!!) (single) ECC81=12AT7 Philips Miniwatt by Mullard UK like new "o" getter 1957 (8.2/7.6ma) (Mitcham plant)
(!!!) (Single) ECC81=12AT7 Siemens Halske branded Mullard like new 1966 (8.2/7.4ma)
(!!!) (Single) ECC81=12AT7 Telefunken Germany <> bottom NOS 1963 (6.8ma/7.6ma) (recommended for mic)
(!!!) (slightly microphonic single) ECC801S Telefunken <> bottom rebranded 12AT7/ECC81 Telefunken NOS 1962 (9.2ma/10.2ma)
(!!!) (slightly microphonic) ECC81=12AT7 Miniwatt by Mullard NOS 1970 (9.6/10.6ma)
(!!!) 12AT7WB Raytheon NOS black plates triple mica used/good 1960's (7.8/8.4ma)
(!!) (#1 12AT7 France) 12AT7 Philips Miniwatt France NOS 1964 in white box (7.4/7.8ma)
(!!) (Best Brimar Single) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1967 (10.2/11.4ma)
(!!) (Best GE Single) 12AT7=6679 GE NOS 1978 (10ma/10.1ma) 1-2% section balance
(!!) (Best Pair) 12DT8 RCA gray plates NOS 1970's (11/12.2ma and 11/12.6ma)
(!!) (Best used single) 12AT7 Telefunken Diamond Bottom used/good early 1960's (9.0ma/9.4ma)
(!!) (Best Value Single) M8162=CV4024=12AT7WA Mullard UK NOS 1966 (8/7ma)
(!!) (Best Value) 12AT7 Matsushita JAPAN rebranded Mullard BVA England NOS copper grid posts 1970's (7.6/7.0ma)
(!!) (BEST VALUE) 12AT7 Telefunken Germany used/good 1965 (9.2ma/8.4ma)
