Reference 1680 Submariner 'Comex' | A stainless steel automatic wristwatch with date and bracelet, Circa 1978 Reference 1680 Submariner 'Comex' A stainless steel automatic wristwatch with date and bracelet, Circa 1978 Dial: black Caliber: cal. 1570 automatic, 26 jewels Case: stainless steel, screw down case back Case number: 5'405'393 Closure: stainless steel Rolex Oyster bracelet with folding clasp Size: 40 mm diameter, bracelet circumference is approximately 190 mm Signed: case, dial and movement Box: yes Papers: yes Accessories: Rolex presentation box with outer packaging, Official Chronometer Certification dated September 15, 1978 (punched), leather bi-fold, booklets, and hang tags