This United States postage stamp, issued in 1940, honors Cyrus Hall McCormick, the famed inventor of the mechanical reaper that revolutionized agriculture. Part of the "Famous Americans" series, it carries a face value of 3 cents and is printed in a rich rose-violet shade. The left panel bears McCormick’s name and denomination, accompanied by an emblem symbolizing progress in industry. The detailed portrait captures McCormick’s distinguished profile, celebrating his contributions to mechanized farming. A significant issue for collectors interested in American inventors, agriculture history, and mid-20th-century U.S. commemoratives.