Collectible coins are numismatic items that can hold special value due to their rarity, historical significance, or condition. The United States has produced numerous collectible coins, including versions minted in Philadelphia, such as the 1901 silver dollar. A "1 Roll" typically refers to a roll of coin, often consisting of 20 or 50 coins, depending on the denomination. The value of such coins can vary widely based on factors including mintage, condition (graded by services like NGC or PCGS), and demand among collectors.