Collectible coins refer to various types of currency that are sought after by numismatists and collectors for their historical significance, rarity, or aesthetic value. In the United States, one notable type includes the 1 Cent Penny, which has undergone many design changes since its introduction. The 1875 trial coins, also known as patterns, were experimental pieces struck to test designs and materials for future currency, making them particularly valuable to collectors due to their limited availability and historical context.

Item Denomination Series Year Mint
United States of America 1875 Philadelphia Patterns & Trial Coins 1¢ 1¢ (One Cent, Penny) Patterns & Trial Coins 1875 Philadelphia