We hate to tell you, but unless your spurs are original or cast by Hanover Brass, you're wearing 1872 spurs.  Yup, all the usual reproductions are wrong.  But we can fix that!
These 1859 spurs are cast from from an original Allegheny Arsenal pair by Hanover Brass, and come complete with a set of spur straps made using the correct japanned cast roller buckle as seen on wartime straps.  You won't get reproductions better than this.