The DT 20 refers to a specific type of die trial coin produced in the United States, particularly associated with patterns and experimental coins. These were created in 1860 and are part of a series of die trials meant to test new designs or minting techniques. The coin is linked to Denver, Colorado, highlighting the city's involvement in the minting process. Collectible coins like the DT 20 are sought after by numismatists due to their historical significance and rarity.

Item Denomination Series Year Mint
1860 DT$20 Clark Gruber Copper Die Trial DT$20 Patterns & Die Trials 1860 Denver, Colorado