Collectible coins encompass a wide range of items sought after by numismatists and collectors, including those minted by the United States of America. Among the varied types are trial coins, which are experimental pieces created to test minting processes or designs before full-scale production. One of the most famous collectible coins is the 1804 silver dollar, often referred to as the "King of American Coins." This coin has gained legendary status due to its limited mintage, historical significance, and the mystique surrounding its origin, making it a coveted item in the world of numismatics.

Item Denomination Series Year Mint
1804-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1804 Philadelphia
1804-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1804 Philadelphia