Collectible coins encompass a variety of types, including historical coins, commemoratives, and bullion. The United States has produced numerous collectible coins, such as the Twenty Dollar gold pieces, particularly the Liberty Head and Saint-Gaudens designs. The Braided Hair Cent, minted in 1847 at the Philadelphia Mint, is notable for its intricate design and is sought after by collectors. Such coins often have historical significance and appeal due to their rarity, condition, and artistic value.