"195" aka "Fatboy" left. "195" thicker handle w/exposed black retainer ring; height differential & adjustment ring is wider w/ different knurling on the ring & handle. The "195" is 79.9g / 2.81oz & 3.45" height. The Slim is 71.1g / 2.50 oz & 3.56" height. "195" Mfg from 1958-62 and Slim Mfg 1961-68.
