3 7/8″ high x 2 1/2″ wide. Stamped Steel body. Steel shackle. Post key. “PATENTED JUNE 16 1914” is stamped on the reverse of the body. “EAGLE LOCK CO. TERRYVILLE CONN. U.S.A.” is stamped on the obverse of the shackle.Patent # 1100391. More… “Courtest David Heuermann”