2 1/2″ wide. (actual: 2.505″ wide x 3.280″ high x .834″ deep). Bronze body. Bronze shackle. Post key. Extra heavy tumbler lock. For RR Cars and Switches. Clevis and chain. Spring dust guard. Catalog #: 88, first appears in catalog of 1880.Patent # 205171. We have not found a non-logo lock as yet.