Rolex Yacht-Master II Ref 116688 an 18ct gold regatta countdown chronograph wristwatch dial: white with gold luminous baton markers and subsidiary dial at 6 for seconds, countdown timer 1 to 10 minutes. Calibre: cal. 4160, automatic, 42 jewels. Movement number: C0296144. Case: 18ct gold, bezel with blue insert, screw down back. Case number: 2118. Serial number: Z975785. Closure: 18ct gold Rolex Oyster bracelet and folding clasp. Dimensions: 44 mm diameter, bracelet circumference approximately 175 mm. Signed: case, dial and movement. Accessories: Rolex guarantee card, card holder, calendar card, presentation case and outer box