Reference 817 | A stainless steel chronograph wristwatch with bracelet, Made for the Italian Army, Circa 1975 Dial: black Caliber: cal. 236 mechanical, 17 jewels Case: stainless steel, screw down case back Case number: E.I. 0’451 Closure: stainless steel expandable bracelet Size: 39.5 mm diameter, bracelet circumference approximately 175 mm Signed: case, dial and movement Box: yes Papers: no Accessories: Breitling presentation box