Collectible coins encompass various types, including patterns and trial coins, which are created to test designs and manufacturing processes. The 1889 One Cent Penny, minted in Philadelphia, is a notable example of a trial coin showcasing the potential design for the Lincoln penny. Such trial coins are often sought after by collectors due to their rarity and historical significance, representing a unique glimpse into the minting process of the United States.

Item Denomination Series Year Mint
United States of America 1889 Philadelphia Patterns & Trial Coins 1¢ 1¢ (One Cent, Penny) Patterns & Trial Coins 1889 Philadelphia