Collectible coins, often referred to as numismatic items, include various types such as currency, patterns, and commemorative editions. The One Dollar coin, for instance, has had multiple designs in the United States and often features historical figures or significant events. Patterns are experimental coins created for design evaluation, with the 1759 pattern coinage representing the early examples of such innovations in American minting history. Collectors value these items based on rarity, historical significance, and condition.