Is it a Morgan Silver Dollar? If so then the value would be based on the condition and if in mint condition then $100 is the value
Coins of the United States
Coins of the United States dollar were first minted in 1792. New coins have been produced annually since then and they make up a valuable aspect of the United States currency system. Today, circulating coins exist in denominations of 1¢ (i.e. 1 cent or $0.01), 5¢, 10¢, 25¢, 50¢, and $1.00. Also minted are bullion (including gold, silver and platinum) and commemorative coins. All of these are produced by the United States Mint. The coins are then sold to Federal Reserve Banks which in turn are responsible for putting coins into circulation and withdrawing them as demanded by the country's economy.
Today four mints operate in the United States producing billions of coins each year. The main mint is the Philadelphia Mint, which produces circulating coinage, mint sets and some commemorative coins. The Denver Mint also produces circulating coinage, mint sets and commemoratives. The San Francisco Mint produces regular and silver proof coinage, and produced circulating coinage until the 1970s. The West Point Mint produces bullion coinage (including proofs). Philadelphia and Denver produce the dies used at all of the mints. The proof and mint sets are manufactured each year and contain examples of all of the year's circulating coins.
Draped Bust dollar
The Morgan dollar was a United States dollar coin minted from 1878 to 1904, and then again in 1921. It was the first standard silver dollar minted since production of the previous design, the Seated Liberty dollar, ceased due to the passage of the Coinage Act of 1873, which also ended the free coining of silver. The coin is named for its designer, United States Mint Assistant Engraver George T. Morgan. The obverse depicts a profile portrait representing Liberty, while the reverse depicts an eagle with wings outstretched.
The dollar was authorized by the Bland–Allison Act. Following the passage of the 1873 act, mining interests lobbied to restore free silver, which would require the Mint to accept all silver presented to it and return it, struck into coin. Instead, the Bland–Allison Act was passed, which required the Treasury to purchase between two and four million dollars' worth of silver at market value to be coined into dollars each month. In 1890, the Bland–Allison Act was repealed by the Sherman Silver Purchase Act, which required the Treasury to purchase 4,500,000 troy ounces (140,000 kg) of silver each month, but only required further silver dollar production for one year. This act, in turn, was repealed in 1893.
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The Draped Bust dollar is a United States dollar coin minted from 1795 to 1803, and again into the 1850s. The design succeeded the Flowing Hair dollar, which began mintage in 1794 and was the first silver dollar struck by the United States Mint. The designer is unknown, though the distinction is usually credited to artist Gilbert Stuart. The model is also unknown, though Ann Willing Bingham has been suggested.
In October 1795, newly appointed Mint Director Elias Boudinot ordered that the legal fineness of .892 (89.2%) silver be used for the dollar rather than the unauthorized fineness of .900 (90%) silver that had been used since the denomination was first minted in 1794. Due largely to a decrease in the amount of silver deposited at the Philadelphia Mint, coinage of silver dollars declined throughout the latter years of the 18th century. In 1804, coinage of silver dollars was halted; the last date used during regular mint production was 1803.