In the realm of collectible coins, patterns refer to coins that were struck as prototypes or test pieces to evaluate designs or manufacturing processes. These coins often differ from their finalized versions in terms of design details, composition, or size. An example from the United States is the 1795 pattern coins, which were created during the early years of the U.S. Mint to showcase potential designs for circulating currency. Collectors highly prize these pieces due to their historical significance and rarity.

Item Denomination Series Year Mint
1795 P1c Copper J-20 BN P1c Patterns 1795 Philadelphia