The badge of distinction “For accident-free air traffic control” is one of the forms of encouragement, popularization and propaganda of the experience of air traffic management personnel, providing long-term trouble-free work in air traffic control. Factory stamp on the reverse (photo 9-10). There are three badges in the presented lot. “For accident-free air traffic control” – 10 years. “For accident-free air traffic control” – 20 years. “For accident-free air traffic control” – 25 years. The badges are made of brass and covered with hot and cold enamel.