Collectible coins encompass a variety of types, including historical coins, commemorative issues, and patterns. In the context of the United States, the "One Dollar" coin has had several iterations, including the well-known Eisenhower, Susan B. Anthony, and Sacagawea dollars. Patterns are experimental designs struck by mints that were not intended for circulation and often serve as prototypes for future coinage. The year 1776 holds significance in American history, particularly as the year of the Declaration of Independence, which has inspired numerous commemorative coins celebrating national heritage and milestones.