The 1804 dollar was a dollar coin struck by the Mint of the United States, of which fifteen specimens are currently known to exist. Though dated 1804, none were struck in that year; all were minted in the 1830s or later. They were first created for use in special proof coin sets used as diplomatic gifts during Edmund Roberts' trips to Siam and Muscat. Some silver dollars were struck in 1804, though all were dated 1803. In 1806, production was suspended by order of James Madison, then Secretary of State, and the denomination was not struck again until the 1804-dated pieces were minted.