Patterns are experimental coin designs created to test new concepts before official minting. In the context of United States coinage, a notable example is the 1865 Patterns, which were produced to evaluate designs for future circulation. These coins often differ in features such as size, metal composition, and design elements from their circulating counterparts, making them highly collectible and sought after by numismatists. The 1865 Patterns include various denominations, showcasing artistic innovation and are pivotal in the history of American coinage.

Item Denomination Series Year Mint
1865 P$1 Silver J-434 P$1 Patterns 1865 Philadelphia