Navitimer, Ref:806, Case No.990471, Circa 1960
17-jewel Cal.178 manual wind movement with column wheel chronograph, black dial with luminous baton hour markers and Arabic 12, silvered outer 1/5th second divisions and tachymetre scales, white pointed baton hands with luminous inserts and arrow tipped chronograph hand, silvered subsidiary dials at 3, 6 and 9 for running seconds, 30 minute and 12 hour recording, brushed and polished round case with snap on back, rotating slide rule bezel, signed crown flanked by twin pushers, fitted expandable link bracelet, case, dial and movement signed
41mm.