Collectible coins encompass a wide range of numismatic items, including historical, commemorative, and rare pieces that attract avid collectors. In the United States, collectible coins can include issues from the U.S. Mint such as state quarters, presidential dollars, and silver eagles. The term "DT5c" typically refers to the 5-cent denomination, or nickel, with specific interest in either the types or variations of these coins, including the classic Buffalo nickel and the more modern Jefferson nickel, each contributing to the rich tapestry of American numismatics. Collectors often seek coins based on rarity, condition, historical significance, and minting errors.

Item Denomination Series Year Mint
1866 DT5c Obverse Uniface Die Trial J-A1866-1 DT5c Die and Hub Trials and Splashers 1866 Philadelphia