Brand IWC Model (Watch) Portofino Automatic Reference number IW3203 Automatic winding Case Material Yellow gold Strap material Leather Condition Used (Good) The item shows signs of wear perceptible to the sight and touch, such as scratches, nicks or small dents. Kit Without original box and papers Automatic winding Case Case Material Yellow gold Diameter 34 mm Dial Black diamonds Strap Strap material Aftermarket leather Strap colour Black - Auction fee 25%.