Deutz belt buckle with engine design and 'KHD DEUTZ' text A vintage KHD Deutz BF 6L 913 Air Diesel Belt Buckle made by the Great American Belt Buckle Co. Design Features an embossed KHD Deutz air-cooled diesel engine illustration with textured metal finishing. Era: Typically dates back to the 1970s–1980s promotional advertising collectibles for industrial and agricultural machinery. #automotive #engineer