Year: 2013 This is an authentic ROLEX Stainless Steel 18K Yellow Gold 40mm Cosmograph Daytona Black 116523. Originally designed for professional race car drivers, this cosmograph wristwatch is crafted of 18 karat yellow gold and stainless steel. It has a chronograph and bezel with tachymetric scale, set against a black dial. This state of the art watch features perpetual, self winding movement and precision to within 1/8 of a second. Follow this item for alerts. Rolex is a registered trademark of Rolex. FASHIONPHILE is not affiliated with Rolex.