Gents Audemars Piguet Jules Audemars 18K white gold, Ref#26100BC on original reptile strap with 18K white gold deployant buckle, sapphire display caseback, case diamter 41mm. Self winding movement, chronograph functions, tachymetric scale on outer dial edge. Ivory porcelain dial with registers for 30 minutes and seconds; Breguet numerals and inner seconds track with red 5 second increment markings. Box and papers.