2″ wide. (actual: 1.957″ wide x 2.575″ high x .534″ deep). Bronze body. Bronze shackle. Post key. Spring dust guard. Catalog #: 76, first appears in catalog of 1880. “W.BOHANNAN BROOKLYN, N.Y. PAT. JUNE 25.79 76” is stamped on the obverse of the shackle.Patent # 205171.