Collectible coins refer to numismatic items sought after by collectors due to their rarity, historical significance, or unique characteristics. The United States has produced a variety of collectible coins, including patterns, which are experimental designs struck by the U.S. Mint to test new concepts or changes before official release. The year 1799 is notable in U.S. numismatics for the production of silver dollars, particularly the Flowing Hair and Draped Bust designs, which are highly sought after due to their limited mintage and historical context. The "P 10" designation might refer to a specific grading or categorization system within the numismatic community.

Item Denomination Series Year Mint
1799 P$10 Copper J-26 BN P$10 Patterns 1799 Philadelphia