A diamond set quartz 'Mille Miglia' chronograph wristwatch, by Chopard

A diamond set quartz 'Mille Miglia' chronograph wristwatch, by Chopard
The circular white dial with gilt baton markers, subsidiary seconds, sweep second hand, tachymeter registers, date aperture and luminous hands, within a brilliant-cut diamond bezel, the chronograph mechanism operated by a button in the band, the case back secured by eight screws, 30mm wide, with documents