Collectible coins encompass a wide range of categories, including historical coins, commemorative issues, error coins, and trial pieces. The United States has produced various collectible coins, with trial coins serving as prototypes or test pieces for new designs or minting processes. An example from 1868 includes specific trial coins that were created to evaluate new designs before mass production, often featuring unique characteristics that distinguish them from standard issues. These coins are highly sought after by collectors for their historical significance and unique attributes.

Item Denomination Series Year Mint
1868-- (Unknown) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1868 Unknown
1868-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1868 Philadelphia
1868-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1868 Philadelphia