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(!!!!) (Best Single) USN-CHS-6922 Sylvania gold pins NOS 1965 (12/16.6ma)
6DJ8 Amperex Bugle Boy Holland used/like new 1964 (read review)
(!!!!) (Single) 6922=E88CC Siemens Halske Germany branded RCA gray shield used 1966 (12/9.2ma)
(!!!) (slightly microphonic) 12AU7A Westinghouse black plates "D" getter halo 1964 NOS (9.6/10.6ma) (similar to RCA black plates)
(!!!) (Best Single) EC86 Amperex Bugle Boy Germany by Valvo 1959 (13.8ma)
(!!!) 6BL7GTA GE branded Marconi NOS 1960 era tilted glass (46/53ma) (High Gm) strong single
(!!) (#1 12AT7 France) 12AT7 Philips Miniwatt France NOS 1964 in white box (7.4/7.8ma)
(!!) (Best Single) 12AU7A Westinghouse gray plates "O" getter halo 1960's NOS (10.6/11.2ma)
(!!) (Good Value) 12AX7 Siemens Halske Germany rebranded "BOGEN" used/good 1960 (161 Series) (Gm=1400/1500 and 0.8/0.9ma)
(!!) (Recommended from 1958) JHS-12AT7WA Sylvania triple mica "D" getter NOS 1958 (11.6/15ma) (phase inverter, reverb)
(!!) (Recommended from 1964) 12AT7WA Sylvania NOS 1964 (7.0/8.4ma)
(!!) (Best Value Single) JAN-5670W GE NOS 1986 (10/7.5ma)
(!!) (slightly microphonic single) 12BZ7 RCA gray plates NOS 1966 (2.3/3.0ma)
(!!) (Recommended Single) 12BZ7 RCA gray plates NOS 1968 mica slightly tilted (2.1/2.2ma) (High Gm)
(!) (slightly microphonic single) 12AU7 Hitachi JAPAN branded IEC Mullard NOS ribbed plates 1968 (9.4/11ma)
(!) 12AU7A Hitachi JAPAN branded Realistic Lifetime NOS ribbed plates 1960 era (9.2/12.2ma)
(!) 12BH7A GE gray oval plates "O" getter halo used/good 1964 (7.2ma/8.5ma)
(!!!) (Good Value Pair) 6SN7GTB RCA ADT NOS 1959 (8.4/7.7ma and 8.8/6.7ma)
(!!!) (Best Single 1965) JHS-12AX7WA Sylvania NOS 1965 (1.3/1.5ma and Gm=1700/1800)
(!!) (BEST OVERALL SINGLE) EC86 Telefunken Germany <> bottom gold pins NOS 1961 (15.5ma) (Highest mA and Gm)
