Collectible coins, particularly those from the United States, include various types, such as the 25-cent quarter. The State and Territorial Quarters program, launched in 1999, features designs representing each state and territory, minted to celebrate American heritage. The San Francisco Mint produced special proof and uncirculated versions of these quarters, often sought after by collectors for their quality and limited availability. Collectors value these coins not only for their face value but also for their historical significance and aesthetic appeal.

Item Denomination Series Year Mint
1999-S (San Francisco) State & Territorial Quarters 25¢ (Twenty Five Cents, Quarter) State & Territorial Quarters 1999 San Francisco