US Airforce Framed Bloodchit Vietnam

Blood chits were used by U.S. aviators as a way of communicating with non-English-speaking people. Made of leather, cotton, silk, or rayon, they served as a safe-conduct pass for a downed aviator in need of help from local people. This Vietnam War-era blood chit has 14 languages, the American flag, and a serial number at the bottom. It was used in Southeast Asia and the West Central Pacific