This vintage Hanhart Fliegerchronograph, produced in the early 1940s, is a historically significant timepiece associated with the German Luftwaffe during World War II, it is in a good condition and in proper working order. Hanhart, established in 1882 by Johann Adolf Hanhart, by the late 1930s the company had become a prominent supplier of precision chronographs for military use, and particularly for the Luftwaffe. This chronograph has a chrome-plated case measuring 41mm in diameter, excluding the original crown. The stainless steel screw-in case back bears the same serial number as the movement, ensuring authenticity. The case shows light wear consistent with its age, while the plexiglass is in excellent condition. The original matte black dial is designed for optimal legibility, with luminous Arabic numerals and cathedral-style hands. Two sub-dials display the running seconds and a 30-minute chronograph counter. The dial is original and untouched, and it has developed a uniform patina. At the heart of the watch is the Hanhart Caliber 41, a manual-winding movement with 17 jewels. This movement is renowned for its flyback function, allowing the chronograph to be reset and restarted with a single push—a critical feature for pilots requiring precise timing. The movement operates reliably and has been serviced in-house to ensure accurate performance. The introduction of the Caliber 41 movement in 1939 marked a significant advancement, providing pilots with a reliable flyback chronograph essential for aerial navigation and mission timing. The Hanhart Caliber 41 was developed in the late 1930s as part of Germany’s initiative to supply its Luftwaffe pilots with precise and robust chronographs. Introduced as an evolution of the earlier Cal. 40 monopusher, the Cal. 41 was a two-pusher chronograph with the flyback complication, significantly enhancing operational efficiency during flight. Manufactured by Hanhart in Gütenbach, Black Forest, the movement was known for its simplicity, reliability, and utilitarian construction. It operated at 18,000 vibrations per hour and has a 30-minute counter. The column-wheel ensured crisp pusher action, and its solid nickel construction made it durable under harsh conditions. The Cal. 41 remained in use throughout WWII and has since become a symbol of functional military chronograph design, with surviving examples well regarded by collectors for both their technical significance and historical authenticity. Collectors seeking a timepiece with historical significance and mechanical integrity will appreciate this Hanhart Flieger chronograph.