Collectible coins encompass a wide variety of numismatic items, including historic coins, commemorative issues, and bullion coins. The United States has produced numerous collectible coins, with significant examples like the 1 One Dollar gold dollars minted starting in 1849, particularly notable in the 1855 edition. Gold dollars played a key role in U.S. monetary history, offering unique designs and value for collectors. N/A indicates a non-applicable or unavailable status, which can be relevant when discussing specific grading or condition details for certain collectible pieces.