Antiquorum Auctioneers Lot soldUSD 0EstimateUSD 7 500 - 9 500 See all lots IWC Ref. 3714 Antiquorum - New York Sale, 30 September 2015 | New York, 30 September Summary Movement Automatic Lot number 257 Diameter 41mm Location Description IWC REF. 3714 PORTUGUESE CHRONOGRAPH AUTOMATIC YELLOW GOLD International Watch Co., Schaffhausen, "Portuguese Chronograph Automatic," case No. 3497076, Ref. 3714. Made circa 2000. Very fine, large, self-winding, water-resistant, 18K yellow gold wristwatch with round button chronograph, register and an 18K yellow gold IWC buckle. Three-body, polished and brushed, overhanging bezel, concave lugs, case back with 4 screws, domed sapphire crystal. Matte black with applied yellow gold Arabic numerals, outer dot minute track and 1/5th seconds scale with 5-minute/seconds Arabic markers, subsidiary dials for the seconds and 30-minute register. Yellow gold feuille hands. Cal. 79240, gilt brass, oeil-de-perdrix decoration, 31 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions, shock absorber, self-compensating flat balance spring, hack mechanism.