The West Point Bullion Depository made circulating cents from 1973 to 1986 and circulating quarters in 1976 to 1979.In 1968, proof coin production moved from the Philadelphia Mint to San Francisco and proof coins gained the “S” mint mark.After that, they produced “S” circulating coins from: The San Francisco Mint made circulating coins with the “S” mint mark from 1854 to 1955.Mint marks were placed on the reverse of coins until 1968 when they moved to the obverse.
The Coinage Act of 1965 eliminated mint marks to discourage collecting while the Mint worked to meet the country’s coinage needs.
The following year, the “P” appeared on all of the denominations except the cent, which still holds true today. After the war, when use of the regular alloy resumed, the mint mark returned to its former position and the Mint no longer used Philadelphia’s “P.” The mark’s position also moved from the right of Monticello to above the dome to indicate the new metal composition. When nickel was removed from five-cent coins during World War II, the “P” mint mark first appeared on coins produced in Philadelphia. However, the practice of not identifying Philadelphia’s coins continued even after the first branches were established. When the Mint branches in Charlotte, Dahlonega, and New Orleans opened in 1838, mint marks made their first appearance on U.S. A MaCongressional Act established mint marks in the United States, along with the first Mint branches. Philadelphia was the only branch in operation in the Mint’s earliest years, so identifying the sources of a coin was not necessary. The evaluations ensured that each facility produced coins to the correct specifications. used precious metals such as gold and silver to make circulating coins, a commission evaluated the metal compositions and quality of coins from each of the Mint facilities. They hold the maker responsible for the quality of a coin. Mint marks are letters that identify where a coin was made.