This is a one of a kind new sample. We had some of this beautiful purple Italian vegetable tanned leather left over from a previous big order so we made this Parker crossbody style with the last Swiss Amiet lock we had. The lock is light and really nice. Before they discontinued this style we were putting it on our briefcases. The buttons slide together to open. We lost the key but it is not necessary to open and close. These keys are standard so you might be able to find one on ebay.