The U.S. Mint 2013 Uncirculated Coin Set Denver (D) includes a $1 coin composed of copper that was minted in Denver in the year 2013. The set is uncirculated and features a business strike type, making it a desirable addition for collectors. It is certified by the U.S. Mint and holds its original grade, ensuring its authenticity and quality. This set represents a piece of American numismatic history and is a valuable investment for any coin enthusiast.