Collectible coins encompass a wide range of numismatic items, including historical coins, commemoratives, and medals. In the United States, collectible coins often include those produced by the U.S. Mint, such as commemorative coins and medals that celebrate significant events and individuals in American history. The Julian cataloging system is used to identify and classify U.S. Mint medals by their specific design and issue year. An example includes items dated from 1856, which may hold varying degrees of rarity and value in the collector's market. The term "Unknown" may refer to pieces for which limited information is available regarding their origin or historical context.

Item Denomination Series Year Mint
(1856) J-Pe-26 Av Commodore M.C. Perry 66mm Ms Other / Varied U.S. Mint Medals - Julian 1856 Unknown