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(!!) (Recommended Single) 12AT7=ECC81 Mullard shield logo NOS 1970 (8.0/8.4ma)
(!!) (Recommended Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (8.0/9.2ma)
(!!) (Recommended Single) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1965-1967 (10.4/9.0ma)
(!!) (Single) 12AT7 Brimar Zaerix square black plates triple mica large "O" getter halo like new 1957 (9.2/7.0ma)
(!!) (SINGLE) 12AT7 US Brands used/good
(!!) (Single) 6060=12AT7 Brimar Thorn UK square black plates triple mica large "O" getter halo 1960 NOS (6.4/8.4ma) (Premium low noise 12AT7)
(!!) (SINGLE) M8162=CV4024=12AT7WA Mullard UK NOS 1966 (10.4/9ma)
(!!) (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)
(!!) (slightly microphonic) JHS-12AT7 Sylvania black plate "D" getter 1953 (11.2ma/11.2ma) 1% section balance
(!!) (~ Best Value ~) 12AT7 Toshiba JAPAN black plates rebranded CM Curtis Mathes NOS 1960's copper grid posts (9.0/9.2ma)
(!!) (~ Best Value ~) 12AT7 Toshiba JAPAN rebranded "LINDAL TUBE JAPAN" NOS 1960's copper grid posts (13.8/15.4ma)
(!!) 12AT7 Brimar black plates NOS/70-75% 1955 (5.6/5.8ma)
(!!) 12AT7 Brimar England black plates "U" getter used/good 1950's (6.0/6.4ma)
(!!) 12AT7 Knight by Mullard NOS 1966 (8.8/9.4ma)
(!!) 12AT7=ECC81 Siemens Halske Germany used/good 1964 (8.2ma/12.2ma)
(!!) 12AT7WC Raytheon NOS black plates triple mica 1975 (7/11ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1968 partially faded printing (7.8/10.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1973 (11.2/17ma) (high Ma and Gm)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1975 (9.6/14.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1976 (7.6/8.2ma)
