Chopard: A steel Mille Miglia single button chronograph calendar quartz wristwatch, bezel with Arabic quarter-hour divisions, inscribed 1000 Miglia, white dial with raised baton numerals, outer tachymetric scale, date aperture, subsidiary dial for elapsed minutes, sweep centre seconds operated by a single button in the band, case with protective winder, the back secured by eight screws and numbered 266115 16/8141