Back in the 1980s I inherited a WWII pistol, with legal import papers, from my FIL. It is a German pre-war PPK in 7.65 [.32acp]. It came with military holster - and a German soldier's serial # inked inside - and 2 magazines. The little pistol is accurate, functions perfectly and is fun to shoot or carry. It does have a lot of bluing wear but no rust or blemishes. It's obviously a civilian model as there are NO military markings whatsoever. It would look even nicer with a reblue job.
Would it be okay to have this pistol blued; or is there some kind of value that would contraindicate such work? It's the pistol at the bottom of the photo.