Collectible coins are often categorized based on their historical significance, composition, and design. In the United States, the nickel denomination includes notably the Jefferson Nickel, which was introduced in 1938 and features Thomas Jefferson's portrait. The 1942 Jefferson Nickel is particularly interesting as it was minted during World War II when nickel was scarce, leading to the creation of a silver-copper alloy for this year's coins. The half dime, used before the nickel's introduction, was originally a silver coin worth five cents. Collectors often seek out specific years and mint marks, which can significantly affect a coin's value.

Item Denomination Series Year Mint
United States of America 1942 N/A Jefferson Nickels 5¢ 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1942 N/A