Nice one! Norm knew a winner when he ordered those knives! Known serial number ranges in my records so far are #00160-#02984. That makes them 1966-67 production exclusively so far. Numbers of Shikari ordered is unknown, however, since records of Norm Thompson's order have not surfaced, and these serials seem to be drawn from regular production blades with Shikari shields substituted for the Old Timer shields and, of course, those killer stone pocket sheaths which were likely the precursor of the slightly later 165UH, 153UH and 171UH sheaths.