Dollar coins have been minted in the United States in gold, silver, and base metal versions. The term silver dollar is often used for any large white metalcoin issued by the United States with a face value of one dollar, whether or not it contains some of that metal. Silver dollars, the first dollar coin issue, were minted beginning in 1794. Gold dollars and gold-colored dollars have also been produced by the United States. The Sacagawea and Presidential dollars are sometimes referred to as golden dollars.