Collectible coins encompass a wide range of numismatic items, including rare coins, historical pieces, and commemorative issues. In the United States, collectible coins often feature significant motifs, such as presidents, national landmarks, or events, and they can be composed of various metals like gold, silver, and platinum. Coins are graded based on their condition, rarity, and demand, influencing their market value. Popular types of collectible coins include federal issue coins like the American Eagle series, commemorative coins, and vintage currency. Collectors may also focus on specific periods or themes, such as colonial or state quarters.