Collectible coins can encompass a variety of types, including patterns, which are trial strikes made to test designs or technologies before official production. One notable example is the 1867 patterns, which were created in the United States as part of the Mint's effort to explore new coinage formats and designs. These coins are typically highly sought after by numismatists due to their rarity and historical significance. The U.S. Mint produced a limited number of these pattern coins, making them valuable pieces for collectors.

Item Denomination Series Year Mint
1867 PG$1 Copper J-594 BN PG$1 Patterns 1867 Philadelphia