Collectible coins, particularly those from the United States, encompass a variety of types, including the 25-cent quarter. The quarter, a widely circulated denomination, has seen numerous designs reflecting American history and culture. Among collectible coins are privately issued patterns, which are unofficial prototypes created by private mints or individuals. These patterns can be appealing to collectors due to their unique designs and limited availability, often representing rare pieces in numismatic collections.

Item Denomination Series Year Mint
United States of America 1860 N/A Privately-issued "Patterns" 25¢ 25¢ (Twenty Five Cents, Quarter) Privately-issued "Patterns" 1860 N/A
United States of America 1915 Philadelphia Privately-issued "Patterns" 25¢ 25¢ (Twenty Five Cents, Quarter) Privately-issued "Patterns" 1915 Philadelphia