Collectible coins encompass various types, including those that commemorate historical events, feature unique designs, or possess rarity due to limited mintages. The term "DT 10" refers to a specific type of coin from the United States, particularly the 10-cent denomination struck for die trials. The coinage from 1849, especially those linked to Patterns or Die Trials, is highly sought after by collectors due to its historical significance and unique characteristics. Additionally, the 1849 $20 gold piece, often related to the California Gold Rush, and coins from the Salt Lake City, Utah mint are of particular interest in the numismatic community.

Item Denomination Series Year Mint
1849 DT$10 Mormon Copper Uniface Restrike RB DT$10 Patterns & Die Trials 1849 Salt Lake City, Utah