Die and Hub Trials and Splashers, often referred to as DT coins, are experimental pieces struck during the coin production process. These coins are significant in the study of numismatics as they represent the early phases of die preparation. The 1857 Die and Hub Trials from the Philadelphia Mint are particularly sought after, as this was a pivotal year for the production of U.S. coins. Collectors value these pieces for their historical significance and rarity, making them an important category in United States coinage.

Item Denomination Series Year Mint
(1857) DT$20 Reverse Die Trial, 35g J-A1857-6 DT$20 Die and Hub Trials and Splashers 1857 Philadelphia