Collectible coins can vary significantly in type, condition, and rarity. The United States has produced numerous collectible coins, including the Jefferson Nickel, which was first minted in 1938 and features a portrait of Thomas Jefferson. The 1940 Jefferson Nickel, particularly from the Denver mint, is notable for its historical context and production numbers. Collectors often seek specific mint marks, such as the "D" for Denver, which can affect the coin's value and desirability among numismatists.

Item Denomination Series Year Mint
1940-D (Denver) Jefferson Nickels 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1940 Denver