Coins of the United States dollar

Coins of the United States dollar – aside from those of the earlier Continental currency – were first minted in 1792.

New coins have been produced annually and they comprise a significant aspect of the United States currency system.

Four mints currently operate in the United States, producing billions of coins each year.

The CC, O, C, and D mint marks were used on gold and silver coins for various periods from the mid-19th century until the early 20th century by temporary mints in Carson City, Nevada; New Orleans, Louisiana; Charlotte, North Carolina; and Dahlonega, Georgia.

The bullion coin types include "S" (San Francisco, 1986–1992), "P" (Philadelphia, 1993 – 2000), and "W" (West Point, New York, 2001–present).

List of current and past United States Mint branches and mint marks found on their coins: The law governing obsolete, mutilated, and worn coins and currency, including types which are no longer in production (e.g. Indian cents), can be found in 31 U.S.C. § 5120.

However, unofficial mill coins, also called "tenth cent" or "tax-help coins", made of diverse materials—plastic, wood, tin, and others—were produced as late as the 1960s by some states, localities, and private businesses for tax payments and to render change for small purchases.