Collectible coins include various types such as patterns, trial coins, and currency issued by the United States of America. The 1866 Five Cents Nickel, also known as a half dime, is notable for its role in the transition from silver to nickel coins. Patterns are experimental coins struck to test designs and compositions, often featuring unique attributes. The Philadelphia Mint produced many of these trial coins, making them significant in numismatic history.

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