For it's age it's in damn near perfect condition. Definitely no paper work, lol definitely a souvenir off a Nazi officer is what I was told thank you I've always loved it and the story behind it. I'll have to take more pictures tomorrow when I can get it out of the safe it's a beautyWelcome to the forum.
We'd like to see a clear picture of both sides of the pistol, holster, and buckle as well as clear close ups of any markings. Value of these items will depend a great deal on their condition and to a lesser extant on who made them. I like what I see so far.
Do you have any paperwork authorising the return of the pistol to the US by your great uncle?