Service medallions compliment any of our flag cases, display cases and most of our pedestals. They can also be used to decorate an urn or any item with a smooth flat surface.We feature these medallions on many of our veteran and military urns. Medallions are available for the United States Army, United States Navy, United States Air Force, United States Marine Corps, United States Coast Guard and the Great Seal of the United States. Product Specifications and Sizes. Medallion Specifications: 2-1/2" diameter. 1/8" think. Solid Brass, lacquer coated with an antique finish. Official US Department of Defense Seals. Adhesive back for easy mounting to any clean, flat surface. Six choices available: Great Seal of the United States, US Army, US Navy, US Air Force, US Marine Corps, US Coast Guard.