Gold commemorative coins in the United States were produced to honor significant events, people, or places. The G 1 refers to the grade of a coin, with "G" standing for good condition. The 1917 gold commemorative series includes coins such as the Maryland Tercentenary gold coin, which celebrates the 300th anniversary of the founding of Maryland. These coins typically contain 90% gold and are highly sought after by collectors for their historical and artistic value.

Item Denomination Series Year Mint
1917 G$1 McKinley Memorial G$1 Gold Commemoratives 1917 Philadelphia