Howdy folks, my grandfather gave me this years ago. Not even sure it was actually his since he was in the AAF in the Aleutians as an armorer. He got a Luger somehow, so I know he collected some stuff. I was reading online how there are tons of reproductions out there made in the 1990s. That was around the time he gave the knife to me. I can't seem to find many with a straight guard like this one. It is a little loose as well. And the back looks unique to pics I have seen. Any advise would be greatly appreciated. I was not planning on selling it, so if it is a reproduction, I won't be hurt. Just like to know!