(!!!) (Recommended Single) 12AT7 Tungsol rebranded AKRAD "U" getter NOS 1956 (6.2/6.6ma)
(!!!) (Recommended Single) 12BH7A CBS Oval Black Plates "O" getter NOS 1960 (11/12.5ma)
(!!!) (Recommended Single) 12BH7A CBS Oval Black Plates "O" getter NOS 1960 (9.2/13ma)
(!!!) (Recommended Single) 5814A GE "5 STAR" with "O" getter halo 1963 (10/14ma)
(!!) (Best Single) 12AU7A Westinghouse gray plates "O" getter halo 1960's NOS (10.6/11.2ma)
(!!) (Nice Single) 12AX7 GE NOS pinched plates 1970 (1.0/1.3ma and Gm=1600/1800)
(!!) (Nice Single) 12AX7 GE NOS pinched plates 1970 (1.2/1.1ma and Gm=1800/1700)
(!!) (Recommended from 1950's) 12AT7WA Sylvania gray plates triple mica "D" getter halo tests like new 1950's (9.4/12.0ma)
(!!) (Recommended Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (7.6/7.0ma)
(!!) (Recommended Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (8.0/9.2ma)
(!!) (Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (6.0/7.4ma)
(!!) 6AS7G Russian branded National NOS 1990's (50ma/86ma)
(!!) 6AS7G Russian branded National NOS 1990's (51ma/77ma)
(!!) 6AS7G Russian branded National NOS 1990's (62ma/65ma)
(!!) 7025 Westinghouse "D" getter 1960 era used (Gm=1200/1300)
(!!) JRC-12AU7 RCA NOS long gray plates mid-1950's "D" getter (9/11.6ma)
(!!)7025 Sylvania gray pinched plates "D" getter 1960 era used/good (Gm=2100/2100)
(!) (BEST SINGLE) 6BL7GTA Tungsol NOS 1960 era (50/54ma)
(!) (PAIR) 5BQ7A Dumont by GE gray plates NOS 1973 "U" and "O" getter (7.0/7.4ma and 7.0/6.6ma)
(!) (PAIR) 5BQ7A Dumont by GE gray plates NOS 1973 (12.6/10.2ma and 9.2/13.5ma)