Collectible coins, particularly from the United States, encompass a range of types including circulation coins, commemorative coins, and proof coins. The 1 One Cent Penny is a notable example, with various designs and historical significance. Patterns and trial coins, such as those minted in 1865, are experimental pieces created to test new designs or technologies prior to mass production. These items are highly sought after by collectors due to their rarity and the insight they provide into the minting process.

Item Denomination Series Year Mint
United States of America 1865 Philadelphia Patterns & Trial Coins 1¢ 1¢ (One Cent, Penny) Patterns & Trial Coins 1865 Philadelphia