48. 48Y IWC. A stainless steel automatic wristwatch IWC. A stainless steel automatic wristwatch Model: Portugieser Reference: IW3531 Date: Circa 2000 Movement: 36-jewel Cal.891/2 automatic, No.2931565 Dial: Black, applied silvered Arabic numeral hour markers, outer silvered dot minute divisions, sunken subsidiary dial at 6 for running seconds, silvered leaf hands Case: Brushed and polished tonneau form, exhibition screw down back, No.2702884 Strap/Bracelet: IWC black alligator leather Buckle/Clasp: Signed brushed and polished steel buckle Signed: Case, dial & movement Size: 35mm