Collectible coins encompass various types, including patterns, which are experimental designs created for testing purposes before final production. The United States, known for its rich numismatic history, has a vast array of collectible coins, such as the 1759 Patterns that represent unique designs not widely circulated. The P10c is a designation that refers to specific ten-cent pieces, which can include rare variations that attract collectors due to their historical significance and limited availability. Collectors seek these pieces for their aesthetic appeal, rarity, and potential investment value.