Need Help (Identity & Value) WWII Luger - with Pictures (Thanks)

[fyvealyve]

I have a German Luger that my grandfather traded in exchange for a carton of smokes (and likely more) with a German at the end of WWII. It is fully functional. As I understand it – no restoration work has been done on it. All serial numbers match, including the 2 magazine clips. Also have the original holster and equipment. As best I can tell, based on the markings, it is Mauser military proof.

I have included several images to this post and would appreciate more knowledgeable insight as to where this was made and also as to value (for insurance purposes).

I would appreciate any assistance.