I am not an Expert on this Item:-           Vintage Mappin "Campaign" Men's Silver (Sterling) Cased Wrist Watch.           Naturally aged Condition,Unpolished etc.(Un-altered by me).           Lovely Porcelain dial (no Cracks).Watch runs well not time tested).           Mechanical Hand-Wind Movement.           Movement is Un-named but generally Mappin Items are of high Quality.           Watch case measures approximately 35mm-quite good size.           The Winder may be a replacement but could relatively easy be changed.           Good examples of these watches are becoming harder to find.*           See all photographs-Sold as shown.            Prompt International Tracked/Signed for Delivery.