IWC Schaffhausen Portugieser ref 3714, a stainless steel chronograph wristwatch, circa 2000 . Dial: black. Calibre: cal. 79240 automatic, 31 jewels. Movement number: 2882859. Case: polished round, back secured by 4 screws. Case number: 2853958. Closure: IWC stainless steel buckle and leather strap. Dimensions: 41 mm diameter. Signed: case, dial and movement. Accessories: none