Darryl Hattenhauer
Venerated Member
I have a mid-1963 X-175 with the rounded pukeguard used from 1958-1963, but with the black control knobs used from 1964-1972. Which is most likely: The blackies are original, or the blackies replaced the yellowish transparent ones used 1959-1963? (See page 35 of the old testic..., er, uh, testament.)