Cal. 4.96 nickel-finished lever movement, 31 jewels, glucydur balance, adjusted to heat, cold, isochronism and 5 positions, 22k gold mini rotor, silvered engine-turned dial with applied baton and Arabic numerals, aperture for date, circular case with down-turned lugs, the sapphire crystal display back secured by six screws, case, dial and movement signed, with 18k white gold Chopard buckle