Collectible coins include various types such as proof sets, which are specially minted for collectors. The 2004 Proof Set from the San Francisco Mint features coins produced with a high-quality finish, intended to showcase intricate details and sharp images. This set typically includes the five state quarters, a nickel, a dime, a half dollar, and a penny, all struck in 90% silver, making it a popular choice among numismatists. The intricate minting process used in proof coins results in a mirror-like finish that adds to their appeal and value.

Item Denomination Series Year Mint
2004-S 1c-$1 Proof Set 11 Coins 1c-$1 Proof Sets 2004 San Francisco