Collectible coins encompass a variety of types, including patterns, which are prototype pieces struck to test designs before mass production. The 1865 PH10c is an example of a pattern coin produced in Philadelphia, representing a proposed design for the ten-cent denomination in the United States. Such coins are highly sought after by collectors due to their rarity and historical significance, often showcasing unique designs or features that differ from officially minted coins.

Item Denomination Series Year Mint
1865 PH10c Copper J-420 BN PH10c Patterns 1865 Philadelphia