Collectible coins, often referred to as numismatic items, encompass various types including historical pieces, error coins, and limited editions. The United States has a rich tradition of collectible coins, including the iconic 1 One Dollar coins, Buffalo Nickels, and notable issues such as the 1913 nickel struck in San Francisco. Each of these coins is valued not only for its metal content but also for its rarity, historical significance, and condition, making them sought after by collectors.