Patterns are a unique category of collectible coins characterized by their experimental or trial designs, often created to test new concepts for coinage. The 1865 patterns from the United States include various designs that were proposed but never officially adopted for production. These coins are highly sought after by collectors for their historical significance and rarity, reflecting the artistic and technological aspirations of the U.S. Mint during that era. Collectors value these pieces for their unique qualities and the insight they provide into the evolution of American coinage.