Collectible coins encompass a wide array of numismatic items, including historical coins, commemorative pieces, and medals. The American Institute Medals, such as the Harkness Medal issued in 1856, are notable examples of collectible medals that often celebrate achievements in various fields. These medals may have intricate designs, historical significance, and varying levels of rarity, making them desirable for collectors. The United States of America has a rich history in minting coins and medals, contributing to the diverse landscape of American numismatics.

Item Denomination Series Year Mint
(1856-1860) Hark-80 American Institute Bronze Ms Other / Varied American Institute Medals - Harkness 1856 Unknown