Collectible coins, often sought after by numismatists, can encompass a wide range of categories, including patterns, trial coins, and historical pieces. Trial coins are struck to test the design and minting process before final production and often feature distinctive characteristics. One notable example is the 1878 Philadelphia trial coins, which represent an important period in U.S. coinage history. These pieces can hold significant value due to their rarity and the unique insights they provide into the evolution of coin design and minting techniques in the United States.

Item Denomination Series Year Mint
1878-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1878 Philadelphia