The 1863 Pattern coins from the United States represent experimental designs that were not issued for circulation but were produced to test new concepts in coinage. The P25c, or 25-cent pattern coin, is a notable example, featuring variations from standard Mint designs. These patterns are highly sought after by collectors due to their rarity and historical significance, often associated with changes in design or denomination that did not make it to regular production.

Item Denomination Series Year Mint
1863 P25c Silver J-335 P25c Patterns 1863 Philadelphia