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. There is a hole going through the case and shackle to accept a wire seal. Clevis and chain. Spring dust guard. Catalog #: 88, first appears in catalog of 1880.Patent # 205171. The catalog shows the seal hole going through the dust guard and body. We have not found this lock as yet. When we do we will list it. We have not found a non-logo lock as yet.