Collectible coins, particularly in the United States, include a range of types such as patterns and trial coins. Patterns are experimental designs created to test new coinage concepts and are often struck in limited quantities. The 1838 trial coins from Philadelphia are notable examples, as they reflect the Mint's efforts to refine designs before official release. These coins are highly sought after by collectors due to their historical significance and rarity.

Item Denomination Series Year Mint
1838-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1838 Philadelphia
1838-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1838 Philadelphia