Collectible coins can encompass a wide range of types, including patterns, trial coins, and those specifically minted by the United States of America. Patterns are experimental designs created to test new concepts before official production, while trial coins are struck to evaluate the feasibility of a new denomination or design. The year 1857 is significant in U.S. numismatic history due to the discontinuation of the half cent and the introduction of new gold and silver coins, making it a notable period for collectors. Other varied examples might include coins minted for special occasions or commemorative issues.

Item Denomination Series Year Mint
1857-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1857 Philadelphia
1857-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1857 Philadelphia