A 10¢ Airmail stamp commemorating the 50th anniversary of regularly scheduled Air Mail was issued in Washington, DC, on May 15, 1968. The horizontal stamp pictures a Curtiss Jenny, the 90 horsepower biplane that carried mail on the Washington-New York City run when Air Mail was first established on May 15, 1918. The stamp was designed by Hordur Karlsson and was printed in black on the Giori press. The blue background and blue and red rudder segments were printed by lithography. It was issued in panes of 50 with a quantity of 60,000,000.