Serial number 4481. Made in 1917. This gun is in 9mm caliber with a 6″ barrel. This gun is in excellent condition as refinished. It is all matching except the frame number on the side. The frame number on the bottom matches the rest of the gun. The frame number on the side is completely different and it looks to have metal milled away. We are at a loss as to why this would be different. The magazine is a replacement.