Genuine alligator JLC straps originally intended for a Reverso. 19mm at crown, 16mm at tang. This is a short strap: 103mm and 63mm suitable for smaller/medium wrists. It is particular befitting for use with a JLC deployment clasp so that little extras strap extension beyond the clasp when closed. These straps are new but in storage for a few months. They were never installed or used. It's natural that all straps shows a slight curve made from the factory. They will fit the wrists much better with less break in time. Both straps are stamped with genuine JCL and Genuine Alligator logos. These were purchased from a JLC authorized dealer. International buyers beware that some countries, e.g., Australia, requires special import permit for all animal leather goods. Please research import restrictions before purchase. Because they are new, returns are not accepted. Retail over $450.