2.394″ high x 1.696″ wide x .839″ deep. Iron body. Iron shackle. Warded. Corrugated key. Bronze plated finish. “E. T. FRAIM PAT PD” is stamped on the obverse of the shackle. Finishes: Brass, Bronze, and Nickel Plated. Commemorates the 100th Anniversary of the Louisiana Purchase. “Louisiana Purchase Exposition” was the title of the 1904 St. Louis Missouri World’s Fair.Patent # 746945.