Omega, de Ville 18ct gold chronometer watch, automatic. Ref 46173102, calibre 2500, watch no. 84816828, sold 6 September 2011, the two tone silver dial with applied gilt Roman numeral hour markers, calendar aperture at 3, gilt Dauphine hands, the back engraved with 'Co-axial escapement', stepped bezel, fitted Omega leather strap with 18ct gold Omega buckle, European convention mark, Swiss gold mark, accompanied by Omega box and outer card, instruction manual, warranty and chronometer certificate cards, 36 mm.