This is a Chronoswiss Chronoscope, a regulator watch by Chronoswiss equipped with a one-push chronograph. The black and white dial is a rare model that is not often seen. I purchased it in September 2008. There are minor scratches on the case and buckle. The leather strap also has a slight bend. However, I have stored it without using it much, so I think it is in quite good condition. The movement is good. The chronograph also works properly. [Model Number] CH1523 [Dial] Black/White [Material] SS (Stainless Steel) [Case Size] Approximately 38mm [Leather Belt] Genuine crocodile (black) by the manufacturer [Accessories] Genuine wooden box, genuine paper outer box, warranty card (warranty period has already expired), instruction manual Although not shown in the photos, the warranty card and instruction manual are included. Both are luxurious, booklet-like finishes. (The warranty card contains personal information, so I will provide a copy or a cutout of that part.) It may be difficult to see in the photos, but in the 8th photo, there are cracks in the clear coating of the genuine wooden box. The cracks are only in the clear coating, not in the wood itself. Also, in the 10th photo, there is some dirt on the paper outer box from storage. I have not had it overhauled. If you have any concerns, please inquire in the comments.