Collectible coins encompass various types, including commemorative, bullion, and historical coins. The United States quarter, specifically the Washington quarter, was first minted in 1932 to honor George Washington's 200th birthday and has become a popular collectible. The 1991 Washington quarter, minted in Denver, is part of the standard series, often sought after by collectors for its design and historical significance. Collectors may focus on factors such as mint marks, condition, and rarity when evaluating the value of these coins.

Item Denomination Series Year Mint
1991-D (Denver) Washington Quarters 25¢ (Twenty Five Cents, Quarter) Washington Quarters 1991 Denver