(!!!!) (Best Value Single) 12AX7 Hitachi Japan branded ITT NOS 1963 (1.0/1.7ma and Gm=1500/1950)
(!!!) (Best Value) 6681=12AX7 Hitachi Japan branded Amperex NOS 1970's (Gm=1400/1400 and 0.8/0.7ma)
6BQ5 Lindal Japan like new 1970's (50ma)
6BQ5 Lindal Japan NOS 1970's (42ma)
6BQ5 Lindal Japan NOS 1978 (59.5ma)
6BW4 Sylvania black plates used/good 1954-1955
