Collectible coins refer to items that are valued for their rarity, age, historical significance, or aesthetic appeal rather than their face value. In the United States, collectible coins can range from state quarters to specialized series like the American Silver Eagle. A "1 Roll" of coins typically contains 50 coins of a specific denomination, such as dollars. The year 1999 is particularly significant for certain series, including the state quarter program, which featured the first five states. Coins minted at the Philadelphia Mint, denoted by a "P" mintmark, often have a distinct historical context and collector demand.