This is a 1939 Brown Junior, Model D model airplane engine. This engine appears to be in like new condition. The crank turns over smoothly with unbelievable compression. It has an original Junior Motors spark plug and the engine comes mounted on a nice, wooden display. 7D8 is stamped on the crankcase. The fuel tank is very clear, but has some circular lines around the base of the tank, not sure if they are scratches or seams. This Brown Jr is a great example of the Brown Jr. line and would look great in any collection or on your vintage class model plane.