Collectible coins can encompass a wide range of items, including historic coins, errors, patterns, and trial coins. Within the context of the United States, trial coins refer to experimental pieces struck to test design, production techniques, or materials before the final coinage. The 1871 trial coins from Philadelphia, for example, are notable for their unique designs and serve as significant artifacts in numismatic history, representing the evolution of U.S. coinage during that period.

Item Denomination Series Year Mint
1871-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1871 Philadelphia