Silver Dollar coins have been minted in the United States in gold, silver, and base metal versions. Silvers, the first dollar coin issue, were minted beginning 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; although purists insist that a dollar is not silver unless it contains about 90% or more of silver. Gold and gold-colored dollars have also been produced by the United States. The Sacagawea and Presidential dollars are usually referred to as “golden”, despite not containing any gold.
Dollar coins have found little popular acceptance in modern circulation in the United States, despite several attempts since 1971 to phase in a coin in place of the one dollar bill. This contrasts with currencies of many other developed countries, where denomination of similar value is only in coin, such as the Canadian loonie and toonie, British 50 pence coin (as well as the 1 pound and 2 pound British coins), the 1 and 2 Australian Dollar coins, the 50 New Taiwan dollar coin, 100 Japanese yen coin, 1 euro coin and 2 euro coin.