IWC manual-winding wristwatch. The model number is unknown, but I believe it's an older type. It is working. Please check the photos for scratches and stains. The brand marking is not on the belt, so it is unknown if it is genuine. The belt is marked as made in Germany. The belt is easy to adjust, making it easy to wear. - Brand: INTERNATIONAL WATCH CO. - Color: Silver - Style: Analog - Material: Stainless steel (belt marking) - Function: Manual winding Detailed information is unknown, so I may not be able to answer some questions. Thank you for your understanding. Antique Antique wristwatch Vintage Vintage wristwatch Manual winding watch #HalloweenOnMercari