Collectible coins encompass various types, including patterns and trial coins, which are often produced as prototypes or test pieces. The 1866 five-cent nickel, also known as the half dime, marked a significant transition in U.S. coinage. Trial coins, such as those from this era, were intended to evaluate designs and compositions before mass production. Collectors seek these items for their historical significance and rarity, with coins from the United States of America often commanding high premiums in the marketplace.

Item Denomination Series Year Mint
United States of America 1866 N/A Patterns & Trial Coins 5¢ 5¢ (Five Cents, Nickel, Half Dime) Patterns & Trial Coins 1866 N/A