<Tr> <Th> Design </Th> <Td> Images with contributions made by Native American tribes and individual Native Americans to the history of the United States </Td> </Tr> <Tr> <Th> Designer </Th> <Td> Various </Td> </Tr> <P> The dollar coin is a United States coin worth one United States dollar . It is the second largest American coin currently minted for circulation in terms of physical size, with a diameter of 1.043 inches (26.5 mm) and a thickness of . 079 inches (2 mm), coming second to the half dollar . Dollar coins have been minted in the United States in gold, silver, and base metal versions . Dollar coins were first minted in the United States in 1794 . The term silver dollar is often used for any large white metal coin issued by the United States with a face value of one dollar, whether or not it contains some of that metal . While true gold dollars are no longer minted, the Sacagawea and Presidential dollars are sometimes referred to as golden dollars due to their color . </P> <P> Dollar coins have never been very popular in the United States since the removal of specie coins from circulation . Despite efforts by the government to promote their use, such as the Presidential $1 Coin Program, most Americans currently use the one - dollar bill rather than dollar coins . For this reason, since December 11, 2011 the Mint has not produced dollar coins for general circulation, and all dollar coins produced after that date have been specifically for collectors and can be ordered directly from the Mint, and pre-2012 circulation dollar coins are able to be obtained from most U.S. banks . </P>

When did the one dollar coin come out