Collectible coins, particularly those from the United States, encompass a wide range of types such as circulating coins, commemorative coins, and bullion coins. The U.S. Mint produces various medals, including those featuring designs from significant historical events or notable figures. The Julian catalog serves as a reference for collectors, detailing medals and coins issued over the years. In 1973, for example, the Philadelphia Mint released specific commemorative pieces that became sought after by collectors due to their historical significance and limited availability.

Item Denomination Series Year Mint
1973 Jk-Ac-117 U.S. Assay Commission Ae Ms Other / Varied U.S. Mint Medals - Julian 1973 Philadelphia