The following is a list of United States mints, past and present:
|Location||Years of operation||Mint mark||Notes|
|Philadelphia, Pennsylvania||1792–||P or none||Pennies and other coins struck prior to 1980 do not carry Philadelphia mint marks, except for Susan B. Anthony dollars, wartime Jefferson nickels, and pennies struck in 2017. Although the mint officially opened in 1792, no regular issue coins were struck until 1793.|
|Charlotte, North Carolina||1838–1861||C||gold coins only|
|Dahlonega, Georgia||1838–1861||D||gold coins only|
|New Orleans, Louisiana||1838–1909||O||There was a long break in production from the beginning of the Civil War (1861) until the end of Reconstruction (1879).|
|Carson City, Nevada||1870–1893||CC||Did not mint coins from 1886 to 1888|
|San Francisco, California||1854–||S or none||Since 1975, strikes only proofs and other collector coinage, except for the Susan B. Anthony dollar.|
|Denver, Colorado||1906–||D or none|
|West Point, New York||1937–||W or none||Commemorative coins bear the W mint mark; circulating coins are indistinguishable from coinage struck in Philadelphia, excepting certain special issues since 2019.|
|M or none||The first (and to date only) U.S. branch mint located outside the Continental United States. Produced coinage in centavo denominations for Philippines circulation.|
From 1965 to 1967 all U.S. coins were struck without mint marks. As it was clear from Gresham's law that the rising cost of silver (and the ensuing removal of most silver from coinage in 1965) led to hoarding or even melting of silver-based pre-1965 coins, overzealous collection of specific mint marks of those years by numismatists almost certainly would have exacerbated those shortages.
Pioneer coinage, tokens, private issue coins and paper money do not have official mint marks.
Coins of the United States dollar were first minted in 1792. New coins have been produced annually and they make up a valuable aspect of the United States currency system. Today, circulating coins exist in denominations of 1¢, 5¢, 10¢, 25¢, 50¢, and $1.00. Also minted are bullion 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.
The Coinage Act of 1873 or Mint Act of 1873, was a general revision of laws relating to the Mint of the United States. By ending the right of holders of silver bullion to have it coined into standard silver dollars, while allowing holders of gold to continue to have their bullion made into money, the act created a gold standard by default. It also authorized a Trade dollar, with limited legal tender, intended for export, mainly to Asia, and abolished three small-denomination coins. The act led to controversial results and was denounced by critics as the "Crime of '73".
The Spanish dollar, also known as the piece of eight, is a silver coin of approximately 38 mm (1.5 in) diameter worth eight Spanish reales. It was minted in the Spanish Empire following a monetary reform in 1497 with content 25.563 g (0.8219 ozt) fine silver. It was widely used as the first international currency because of its uniformity in standard and milling characteristics. Some countries countermarked the Spanish dollar so it could be used as their local currency.
The United States Mint is a bureau of the Department of the Treasury responsible for producing coinage for the United States to conduct its trade and commerce, as well as controlling the movement of bullion. It does not produce paper money; that responsibility belongs to the Bureau of Engraving and Printing. The first United States Mint was created in Philadelphia in 1792, and soon joined by other centers, whose coins were identified by their own mint marks. There are currently four active coin-producing mints: Philadelphia, Denver, San Francisco, and West Point.
The dime, in United States usage, is a ten-cent coin, one tenth of a United States dollar, labeled formally as "one dime". The denomination was first authorized by the Coinage Act of 1792.
The dollar coin is a United States coin with a face value of one United States 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.
Proof coinage refers to special early samples of a coin issue, historically made for checking the dies and for archival purposes. Nowadays proofs are often struck in greater numbers specially for coin collectors (numismatists). Nearly all countries have issued proof coinage.
The Coinage Act of 1792, passed by the United States Congress on April 2, 1792, created the United States dollar as the country's standard unit of money, established the United States Mint, and regulated the coinage of the United States. This act established the silver dollar as the unit of money in the United States, declared it to be lawful tender, and created a decimal system for U.S. currency.
The American twenty-cent piece is a coin struck from 1875 to 1878, but only for collectors in the final two years. Proposed by Nevada Senator John P. Jones, it proved a failure due to confusion with the quarter, to which it was close in both size and value.
The Morgan dollar is a United States dollar coin minted from 1878 to 1904, in 1921, and beginning again in 2021. It was the first standard silver dollar minted since the passage of the Coinage Act of 1873, which ended the free coining of silver and the production of the previous design, the Seated Liberty dollar. It contained 412.5 grains of 90% pure silver. The coin is named after its designer, United States Mint Assistant Engraver George T. Morgan. The obverse depicts a profile portrait representing Liberty, modeled by Anna Willess Williams, while the reverse depicts an eagle with wings outstretched. The mint mark, if present, appears on the reverse above between D and O in "Dollar".
This glossary of numismatics is a list of definitions of terms and concepts relevant to numismatics and coin collecting, as well as sub-fields and related disciplines, with concise explanations for the beginner or professional.
The coins of Canada are produced by the Royal Canadian Mint and denominated in Canadian dollars ($) and the subunit of dollars, cents (¢). An effigy of the reigning monarch always appears on the obverse of all coins. There are standard images which appear on the reverse, but there are also commemorative and numismatic issues with different images on the reverse.
Japanese currency has a history covering the period from the 8th century AD to the present. After the traditional usage of rice as a currency medium, Japan adopted currency systems and designs from China before developing a separate system of its own.
The Coinage Act of 1965, Pub. L. 89–81, 79 Stat. 254, enacted July 23, 1965, eliminated silver from the circulating United States dime and quarter dollar coins. It also reduced the silver content of the half dollar from 90 percent to 40 percent; silver in the half dollar was subsequently eliminated by a 1970 law.
The Washington quarter is the present quarter dollar or 25-cent piece issued by the United States Mint. The coin was first struck in 1932; the original version was designed by sculptor John Flanagan.
The United States dollar is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it into 100 cents, and authorized the minting of coins denominated in dollars and cents. U.S. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green color.
The Coinage Act of 1857 was an act of the United States Congress which ended the status of foreign coins as legal tender, repealing all acts "authorizing the currency of foreign gold or silver coins". Specific coins would be exchanged at the Treasury and re-coined. The act is divided into seven sections.
The Roosevelt dime is the current dime, or ten-cent piece, of the United States. Struck by the United States Mint continuously since 1946, it displays President Franklin D. Roosevelt on the obverse and was authorized soon after his death in 1945.
The Coinage Act of 1853, 10 Stat. 160, was a piece of legislation passed by the United States Congress which lowered the silver content of the silver half dime, dime, quarter dollar, and half dollar, and authorized a three dollar gold piece. Although intending to stabilize the country's silver shortage, it, in effect, pushed the United States closer to abandoning bimetallism entirely and adopting the gold standard.
The United States Mint Proof Set, commonly known as the Proof Set in the United States, is a set of proof coins sold by the United States Mint. The proof set is popular with coin collectors as it is an affordable way to collect examples of United States coinage in proof condition.