Collectible coins encompass a wide range of items, including numismatic coins, medals, and tokens that hold historical, artistic, or cultural significance. Within the United States, collectible medals often commemorate events, achievements, or notable figures, such as the Agricultural Mechanical Society Award Medals. The Harkness medal from 1909 represents a specific historical recognition, though details regarding its designer or mintage may remain unknown. Collectors value these items for their rarity, design, and connection to significant historical moments.

Item Denomination Series Year Mint
1909-- (Unknown) Agricultural & Mechanical Society Award Medals - Harkness Other / Varied Agricultural & Mechanical Society Award Medals - Harkness 1909 Unknown