Rolex Submariner reference 1680 was the first submariner to feature a date wheel and cyclopes crystal and the first to be released in all gold. It was made approximatly between 1966 and 1979 and is known as an excellent collector's watch. The all gold model is especially collectable as there were significantly fewer manufactured compared to their steel counterparts. Automatic caliber 1570 movement, water resistant, screw down crown, acrylic crystal 18K YG case. The watch comes with a blue bezel insert. Serial and reference numbers are crisp and well defined. Bule nipple dial. YG bracelet with 12 links . Bracelet has light stretch for its age.