Collectible coins, particularly patterns, are trial pieces struck to test designs and minting techniques before final production. The 1867 Philadelphia pattern coins of the United States are notable examples, featuring alternative designs that were intended for eventual circulation. These coins often exhibit unique characteristics and can be highly sought after by collectors due to their limited mintage and historical significance. The "P 2 1 2" designation may refer to a specific variety or grading classification within the collecting community.

Item Denomination Series Year Mint
1867 P$2 1/2 Copper J-595 BN P$2 1/2 Patterns 1867 Philadelphia