The 1989 United States Mint Set from the Denver/Philadelphia Mint includes uncirculated coins composed of copper. This set contains coins struck at the Denver Mint in 1989, featuring business strike type. The coins are ungraded and come with certification from the U.S. Mint, representing a piece of American numismatic history. This set would be a valuable addition to any coin collector's portfolio, showcasing the craftsmanship and quality of U.S. Mint production in that year.