The Gadsden Purchase half dollar was a proposed commemorative coin to be issued by the United States Bureau of the Mint. Legislation for the half dollar passed both houses of Congress in 1930 but was vetoed by President Herbert Hoover. The House of Representatives sustained his action, 96 votes in favor of overriding it to 243 opposed, well short of the necessary two-thirds majority. This was the first veto of Hoover's presidency and the first ever for a commemorative coin bill.

The Old Spanish Trail half dollar is a commemorative coin struck by the United States Bureau of the Mint in 1935. The coin was designed by L. W. Hoffecker, a coin dealer, who also was in charge of its distribution.