This is a beautiful Mint Stamp Souvenir Sheet with one round stamp, issued by Mali in 2013.It features an image of Wernher von Braun, one of the most prominent figures in the development of rocket technology in Nazi Germany and, later, in the United States, during World War II. He is sometimes known as being the "Father of Rocket Science." The sheet is Post Office fresh, mint never hinged, and F/VF.