Collectible coins encompass various categories, including numismatic coins, bullion coins, and commemorative coins. In the United States, collectors often focus on editions from the U.S. Mint, which includes coins produced for circulation, special releases, and anniversary issues. Medallic Art Medals, such as those produced in 1975, represent a distinct category of collectible items often celebrating historical events or figures. Additionally, the term "Unknown" may refer to coins or medals with uncertain provenance, making them a topic of interest for collectors seeking to uncover their history and value.

Item Denomination Series Year Mint
1975-Dated Bronze Nelson A. Rockefeller 70mm Ms Other / Varied Medallic Art Medals 1975 Unknown