Thank you for viewing. I have cherished this watch, but I am offering it for sale to someone who loves Corum watches and will use it. The belt is not genuine. There are also scratches, so I think it would be best to replace it. The crown is sapphire. Size: Diameter approximately 32mm Thickness approximately 5mm There are no noticeable scratches on the glass surface. (Please understand this is based on a visual inspection.) Please purchase if you understand that this item has been stored at home for a long time. I will ship via courier service. Watch Corum Hand-wound