Collectible coins are often categorized by their historical significance, rarity, demand, and condition. The United States has produced various collectible coins, including the twenty-dollar gold pieces, often referred to as "Double Eagles," issued from the 19th to early 20th centuries. In 2008, the U.S. Mint released a special edition of the 20-dollar coin themed around Hawaii, celebrating the state's admission into the union. These collectible coins appeal to numismatists and investors alike due to their artistry and potential for appreciation in value.

Item Denomination Series Year Mint
1893-- (Unknown) Hawaii $20 (Twenty Dollars) Hawaii 1893 Unknown
1895-- (Unknown) Hawaii $20 (Twenty Dollars) Hawaii 1895 Unknown
United States of America 189395 N/A Hawaii $20 (Twenty Dollars) $20 (Twenty Dollars) Hawaii 189395 N/A