Coins minted at the Denver Mint in Denver, Colorado, bear the “D” mark on the field of the coin, usually under the coin’s year, as of 2015. Coins minted from 1906 to the present year have this mark. However, gold coins minted in Dahlonega, Georgia, from 1838 through 1861 also bear “D” markings below the eagles on their reverses.
Mint marks are small marks that are stamped onto coins and used to identify the mint that produced the coins. Most U.S. coins feature mint marks on the coin’s field. Most coins in the United States feature mint marks from the Denver or San Francisco Mints; coins minted in San Francisco feature an “S” mark.
Mints generally marked the reverse of coins with mint marks up until 1968. At that time, mints began marking the coins’ obverse, which is the front of the coin, instead. The Denver mint began coin production in 1906 and produces quarters, dimes, nickels and pennies. Up until 1984, the mint also struck foreign coins, including coins for Israel, Mexico and Argentina.
The Denver Mint is one of four coin-producing mints in the United States, with the others located in West Point, New York; Philadelphia, Pennsylvania; and San Francisco, California. The other mint, the Washington Mint in Washington, D.C., prints paper currency.