The IWC Portofino 3513 is a timeless watch designed for distinguished gentlemen. It has a self-winding movement and was sold from the late 1980's to the early 2000's. The case comes in both yellow gold and stainless steel, with a diameter of 34mm. Inside, the automatic caliber 37521 movement keeps perfect time. The Portofino ref. 3513-017 boasts a sleek stainless steel case and a sophisticated silver dial featuring Breguet numerals.