Enicar. A stainless steel manual wind chronograph wristwatch Sherpa Graph 300 Jim Clark, Circa 1960Enicar. A stainless steel manual wind chronograph wristwatchModel: Sherpa Graph 300 "Jim Clark"Date: Circa 1960Movement: 17-jewel Valjoux Cal.72 manual wind, column wheel chronographDial: Black, applied luminous accented polished baton hour markers with luminous tips, white outer 1/5th second divisions, raised outer tachymetre scale to grey surround, silvered subsidiary dials at 3, 6 and 9 for seconds, 30 minute and 12 hour recording, luminous filled baton hands, centre chronograph handCase: Brushed and polished round, screw down back, crown flanked by twin pushers, personal inscription to bandStrap/Bracelet: Associated stainless steel linkBuckle/Clasp: Associated folding claspSigned: Case, dial & movementSize: 40mmMade famous through its regular appearance on the arm of British Formula 1 driver Jim Clark OBE, the Sherpa Graph 300 is a very desirable example of vintage chronographs at their best.