1 11/16″ high x 1 1/4″ diameter x 5/16″ deep (Actual: 1.700″ high x 1.255″ wide x .338″ deep). Brass body. Nickel plated steel shackle. Post key. Original key. July 25, 1909 Louis Bleriot was the first to cross the English channel in a plane of his own design.