During World War II, Abner Aust became a U.S. Army Air Forces ACE, credited with shooting down 5 enemy aircraft in aerial combat. During the Vietnam War he flew more than 300 missions over both North and South Vietnam, and retired in 1972 as a U.S. Air Force Colonel. Abner Aust has hand signed this Vintage B&W 8.5x11 with Colonel USAF/Last WW2 Ace/Tuy Vietnam/1968-69/300 Missions inscriptions. JSA Authentication #AC92692 and JSA Certificate of Authenticity. Light signature on the 300 Missions inscription, sold as is.