Collectible coins, particularly modern commemorative sets, often celebrate significant events, people, or milestones in history. The 2004 modern commemorative coin set from the United States of America features coins issued to honor specific themes or anniversaries. This set typically includes designs that reflect cultural or historical significance, appealing to numismatists and collectors alike. Medals may accompany such sets, adding further value and interest, often characterized by their unique artistry and limited mintage.