Patterns, also known as die trials, are experimental coins struck by mints to test new designs or modifications before final production. The 1849 Patterns from the United States are especially significant, as they were created during a time of transition in American coinage, often featuring unique designs that differed from standard issues. These coins were not intended for general circulation, making them rare and highly sought after by collectors today. The 1849 Patterns include notable examples, such as the $20 Liberty Head gold coin, showcasing intricate artistry and historical importance within the context of U.S. numismatics.

Item Denomination Series Year Mint
1849 DT $2 1/2 Dubosq & Co. Copper Die Trial BN DT $2 1/2 Patterns & Die Trials 1849 San Francisco
1849 DT$2 1/2 Mormon Copper Uniface Restrike RB DT$2 1/2 Patterns & Die Trials 1849 Salt Lake City, Utah