Collectible coins encompass a variety of types, including historical, commemorative, and bullion coins. In the United States, collectible coins can include both limited-edition releases and rare denominations, with gold coins being particularly sought after due to their intrinsic value and historical significance. Gold collectible coins, such as the American Gold Eagle and the Saint-Gaudens Double Eagle, are prized by numismatists for their artistry, rarity, and connection to American history. The market for these coins often fluctuates based on gold prices, collector demand, and overall economic conditions.