Collectible coins encompass various types, including numismatic coins that hold value beyond their face value based on rarity, demand, and condition. The United States Mint produces officially sanctioned coins and medals, with notable examples such as U.S. Mint Medals that commemorate significant events or figures in American history. The Julian reference often pertains to the cataloging of U.S. Mint Medals, with the year 1920 signifying a time when several notable medals and coins were produced. The Philadelphia Mint, as the first mint established in the United States, has a rich collection of historical coins that are highly sought after by collectors.

Item Denomination Series Year Mint
1920 Jk-Ac-64 U.S. Assay Commission Ae Ms Other / Varied U.S. Mint Medals - Julian 1920 Philadelphia