First used in 1782, the seal is used to authenticate certain documents issued by the federal government of the United States. Since 1935, both sides of the Great Seal have appeared on the reverse of the one-dollar bill. The coat of arms is used on official documents—including United States passports—military insignia, embassy placards, and various flags. The Seal of the President of the United States is directly based on the Great Seal, and its elements are used in numerous government agency and state seals.