(!!!) (Recommended Single) 6BX7GT GE branded Westinghouse "O" getter gray plates 1960's (43/48ma)
(!!!) (Recommended Single) 6BX7GT GE branded Westinghouse black plates NOS "O" getter 1962 (71/79ma)
(!!!) (Recommended Single) 6SN7GTA Westinghouse black plates "D" getter halo NOS 1950's (8.6/9.6ma) (rare)
(!!!) (Single) 6BX7GT GE branded RCA "D" getter halo NOS 1957 (70/55ma) (close Gm)
(!!!) (Single) 6SN7GTA Westinghouse USA black plates NOS 1950's (7.0/7.6ma)
(!!!) (slightly microphonic) 12AU7A Westinghouse black plates "D" getter halo 1964 NOS (9.6/10.6ma) (similar to RCA black plates)
(!!!) 6BL7GTA GE branded Marconi NOS 1960 era tilted glass (46/53ma) (High Gm) strong single
(!!!) 6SN7GTB Westinghouse black plates copper grid posts "D" getter 1950's (7.2/8.4ma)
(!!) (BEST PAIR) 8552 RCA Motorola NOS 1981 (90ma and 90ma)
(!!) (Best Single) 12AU7A Westinghouse gray plates "O" getter halo 1960's NOS (10.6/11.2ma)
(!!) (Best Value Single) 12BH7A Hitachi Japan 1970's branded Westinghouse NOS 1984 (11.8/12.9ma) (McIntosh, Quicksilver, Art Audio, Wells)
(!!) (Recommended Pair) 8032 Westinghouse NOS 1968 (88ma and 90ma)
(!!) (Recommended) 6SN7GTB Raytheon gray plates NOS 1960's in white box (9/10ma)
(!!) (SINGLE) 6SN7GTB Westinghouse Rad-Tel Tube Co. gray plates "O" getter halo NOS 1964 (8.4/7.4ma)
(!!) 12AX7A Westinghouse pinched plates "D" getter used/good 1960 era no printing (Gm=1450/1650)
(!!) 12BH7A Westinghouse black plates "U" getter used/good 1950's (6.2/7.2ma)
(!!) 45 RCA Victor NOS in RCA box 1948 (39ma)
(!!) 5Z3G Westinghouse NOS 1957 (59/40 and 61/40)
(!!) 6BX7GT Sylvania "D" getter halo NOS 1950's (44/46ma) (close triode balance)
(!!) 6K6GT RCA branded CBS NOS 1960 some glass chips resting at bottom of tube (46ma)
