Collectible coins, such as those from the United States, are often valued for their historical significance, rarity, and condition. The 1904 dollar coins minted in Philadelphia are part of the Liberty Seated series, notable for their intricate designs and limited mintage. A roll of these coins typically contains 20 units and can be sought after by numismatists for both investment and collecting purposes. Factors like grading, provenance, and market demand significantly influence their value.