Collectible coins refer to numismatic items sought after by enthusiasts and investors, which can include historical coins, rare varieties, and specific issues. An example is the United States 1 One Cent Penny, notable for various designs and minting years. In 1858, the Philadelphia Mint produced trial coins known as "patterns," which are prototypes tested for potential circulation. These trial coins provide insight into the evolution of U.S. coinage and are particularly valued by collectors for their rarity and historical significance.

Item Denomination Series Year Mint
United States of America 1858 Philadelphia Patterns & Trial Coins 1¢ 1¢ (One Cent, Penny) Patterns & Trial Coins 1858 Philadelphia