cal. 1874 manual winding nickel lever movement 17 jewels • silvered dial applied luminous baton indexes luminous hands subsidiary dials for constant seconds 30-minute and 12-hour registers • 18k yellow gold polished case engraved tachometer to the bezel  sapphire crystal display case back secured by 6 screws • case dial and movment signed• with a gold plated  Chopard buckle