Collectible coins are categorized based on various criteria, including type, rarity, historical significance, and condition. One notable type is the "P 10" coin, which refers to a particular design or denomination produced by the U.S. Mint. Patterns, such as those minted in 1865, represent trial pieces or concept designs for future coinage but were never intended for circulation. These patterns can be highly valuable among collectors due to their limited availability and unique designs that capture significant moments in numismatic history.

Item Denomination Series Year Mint
1865 P$10 Gold J-449 P$10 Patterns 1865 Philadelphia