Collectible coins are numismatic items valued for their rarity, historical significance, or unique characteristics. In the United States, collectible coins encompass various categories, including coins produced for circulation, commemorative coins, and bullion coins like the American Eagle. Collectors often seek coins with specific mint marks, grades, or designs, contributing to their value in the marketplace. Coins may also be categorized by their metal composition, age, and the historical events or figures they commemorate.