Collectible coins are numismatic items that are valued for their rarity, history, and condition. The United States has issued various collectible coins, including the five-dollar gold coins that often commemorate significant events or figures. Roosevelt Dimes, minted starting in 1946, feature the profile of President Franklin D. Roosevelt and are collected both for their numismatic value and their silver content, particularly in earlier issues. The 1966 collectibles, including specific varieties and mint marks, may attract interest due to their historical context and the transition in U.S. coinage during that era.