Sacagawea Dollar Market History

The United States Mint primarily produces circulating coinage for the United States to conduct its trade and commerce. The Mint was created by Congress with the Coinage Act of 1792, and placed within the Department of State. Per the terms of the Coinage Act, the first Mint building was in Philadelphia, then the capital of the United States; it was the first building of the Republic raised under the Constitution. Today, the Mint's headquarters is in Washington, D.C. It operates mint facilities in Philadelphia, Denver, San Francisco, and West Point and a bullion depository at Fort Knox.[1]

The Mint was made an independent agency in 1799. It converted precious metals into standard coin for anyone's account with no seigniorage charge beyond
In 2009 the date, mintmark and E pluribus unum were moved to the rim of the coin.

* Presidential dollar, first issued in 2007: The mintmark and date are found on the rim of the coin.

Reverse of a wartime nickel, with the mintmark located above Monticello

Due to a shortage of nickel during World War II, the composition of the five-cent coin was changed to include silver. To mark this change, nickels minted in Philadelphia (which had featured no mintmarks until then) displayed a P in the field above the dome of Monticello. Nickels from San Francisco were minted in the same fashion, and Denver nickels reflected the change in 1943. This new mintmark location continued until 1946, when the nickel returned to its pre-war composition.

The P mintmark, discontinued after the war, reappeared in 1979 on the Anthony dollar. By 1982, it had appeared on every other regular-issue coin except the cent, which still bears no P mintmark. The circulating cents struck in the 1980s at San Francisco (except proofs) and West Point also bear no mintmark, as their facilities were used to supplement Philadelphia's production. Given the limited numbers produced at each facility, they might have been hoarded as