The three sets of 2026-S Semiquincentennial Clad PROOF Quarter from the United States Mint includes a special coin commemorating the 250th anniversary of the United States. This set features a 25-cent coin made of copper-nickel, struck in proof quality at the San Francisco Mint. The set comes with a wooden box and a Certificate of Authenticity, making it a valuable addition to any coin collector's portfolio. This limited edition coin set is a must-have for those interested in American numismatics and commemorative coins.