Submariner, Reference 1680 | A stainless steel wristwatch with date and bracelet, Circa 1975 | 勞力士 | Submariner 型號1680 | 精鋼鏈帶腕錶,備日期顯示,約1975年製 Rolex Submariner, Reference 1680 A stainless steel wristwatch with date and bracelet, Circa 1975 勞力士 Submariner 型號1680 精鋼鏈帶腕錶,備日期顯示,約1975年製 Dial: black Calibre: cal. 1570 automatic, 26 jewels Case: stainless steel, screw down case back Case number: 3'712'159 Closure: stainless steel Rolex Oyster bracelet and folding clasp Size: 40 mm diameter, bracelet circumference approximately 190 mm Signed: case, dial and movement Accessories: none