Thank you for viewing. This is a U.S. Navy Aircrewman Badge. Features: It consists of wings and a central circular part, with an anchor and the letters "AC" designed in the center. Meaning: "AC" stands for "Aircrewman" and is awarded to U.S. Navy aircrew members. It is a used item, but as you can see in the photos, there is little damage. I purchased it at a military shop a few years ago for 12,000 yen.