Collectible coins, particularly in the United States, encompass various denominations and designs that hold historical, artistic, and numismatic significance. The 25-cent coin, commonly known as the quarter, features George Washington on the obverse, with various designs on the reverse representing states, national parks, or other themes through different series. The Washington Quarter was first issued in 1932 to commemorate the 200th anniversary of Washington's birth and continues to be produced, including specific mintages, such as those from the Philadelphia mint in 1990. Collectors often seek out specific years, mint marks, and condition grades, contributing to the coin's overall value and desirability in the numismatic market.

Item Denomination Series Year Mint
1990-P (Philadelphia) Washington Quarters 25¢ (Twenty Five Cents, Quarter) Washington Quarters 1990 Philadelphia