2 1/2″ wide. (actual: 2.558″ wide x 3.222″ high x .768″ deep). Bronze body. Bronze shackle. Post key. Spring dust guard. Clevis and chain. For Railroad cars and switches. “WILSON BOHANNAN BROOKLYN,N.Y. 115” is stamped on the obverse of the shackle. Catalog #: 115, first appears in catalog of 1886.