Collectible coins can include a variety of types, such as patterns, which are trial pieces struck to test new designs or compositions before mass production. One notable example is the 1916 Pattern Quarter (P25c), a unique issue from the United States that features a design that was not adopted for circulation. Patterns like the P25c are highly sought after by collectors due to their rarity and historical significance, often fetching high values in the numismatic market.

Item Denomination Series Year Mint
1916 P25c Silver J-1989 P25c Patterns 1916 Philadelphia