Collectible coins, particularly those from the United States, can hold significant historical and numismatic value. One notable example is the Washington Quarter, which was first minted in 1932 to commemorate the 200th anniversary of George Washington's birth. The 1940 Denver Mint version of the Washington Quarter features the distinctive design of Washington on the obverse and an eagle on the reverse. Collectors often seek specific mint marks, such as "D" for Denver, which can indicate lower mintage and potentially higher value.

Item Denomination Series Year Mint
1940-D (Denver) Washington Quarters 25¢ (Twenty Five Cents, Quarter) Washington Quarters 1940 Denver