Collectible coins, specifically in the context of U.S. numismatics, include a variety of denominations and types, such as the five-cent nickel and half dime. The Jefferson nickel, a prominent type of five-cent coin, was first issued in 1938 and features the portrait of Thomas Jefferson. The 1990 Denver mint version of the Jefferson nickel is considered a modern collectible, with specific interest in its minting quality, design variations, and potential for numismatic value. Collectors often seek coins from various mints, including Denver, for their significance in American coinage history.

Item Denomination Series Year Mint
1990-D (Denver) Jefferson Nickels 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1990 Denver