US Seals and US Military Seals are a great part of any collection. The president seal of the United States is the official arms of the U.S. presidency and is based on the Great Seal of the United States. The Department of the Army Seal and the Department of the Army Emblem are, respectively, the official seal and emblem of the Headquarters, U.S. Army (formerly, of the War Department). The United States Air Force Seal (USAF) is one of the seven Uniformed service seals of the United States whose primary mission is to focus on air superiority. The United States Marine Corps Seal (USMC) represents a branch of the United States military.