Collectible coins, particularly the United States 25-cent quarters, often gain attention among numismatists. The Washington Quarter, first minted in 1932, features George Washington on the obverse and an eagle on the reverse. The 1979 San Francisco Mint issue is notable, particularly in uncirculated or proof condition, due to its limited production and unique characteristics tied to the minting year. Collectors may focus on aspects such as mint marks, grade, and rarity, which influence the coin's overall value.

Item Denomination Series Year Mint
1979-S (San Francisco) Washington Quarters 25¢ (Twenty Five Cents, Quarter) Washington Quarters 1979 San Francisco