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(!!) (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)
(!!!) (Best SIngle 1950's) 12AT7 Brimar UK black plates "O" getter halo NOS late 1950's (11.6/12.8ma)
(!!) 12AT7 Knight by Mullard NOS 1966 (8.8/9.4ma)
(!!) 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 1975 (9.6/14.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1976 (7.6/8.2ma)
(!!) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1962 (8.6/13.6ma)
(!) (#1 12AT7 Value) 12AT7 Sylvania branded Philips black plates NOS 1970's (7.6/8.2ma)
(!!!) (Recommended Single) 12AT7 Telefunken Germany <> bottom NOS 1957 (9.8ma/7.2ma)
(!) (~ Best Value ~) JG-12AT7WA=6201 GE gray plates triple mica "U" getter low hours/like new 1958 (8.8/10.6ma)
(!) 12AT7 East Germany branded "M" Mühlhausen NOS 1970's (8.4/9.0ma)
(!) (slightly micrphinic single) 12AT7 RCA black plates NOS D getter halo 1959 (12.2/10ma)
(!) 12AT7=E81CC RTC Radio Technique France NOS 1971 (7.8/8.0ma)
(!) (Good Value Single) 6201=12AT7WB GE gray plates NOS 1969 (6.2ma/6.6ma)
(!) JG-12AT7WA=6201 GE black plates triple mica "U" getter used/strong 1955 (10ma/15ma)
(!) JG-12AT7WA=6201 GE NOS gray plates 1963-1964 (7ma/7.2ma)
(Best 12AT7 Value) JAN-12AT7WC Sylvania black plates NOS 1970's - 1982 (13 in stock)
(!) (Best Value Single) CV455=12AT7=ECC81 RFT East Germany NOS 1980's (8.4/9.0ma)
(!!) (Best Value) 12AT7 Matsushita JAPAN rebranded Mullard BVA England NOS copper grid posts 1970's (7.6/7.0ma)