International Watch Company Gentleman's Gold 'Da Vinci Perpetual Calendar' Chronograph Wristwatch, Ref. IW3750003 18 kt., automatic, the circular white dial with four subsidiary dials for day, date, month and moonphase, sweep seconds, push-button chronograph functions, within a polished bezel and case with hooded lugs, diameter ap. 39 mm., with brown leather strap and gold buckle, dial, movement and case signed IWC Schaffhausen, case no. 2389075. C