Kenny, all may not be lost. Since it is a Krieghoff if will have better than average value from a starting point. Plating can be professionally removed and the proper finish can be professionally restored. That done it will still not have the same value as an original but...
Since a family member brought it home you might find the veteran's paperwork permitting him to bring it home. This slip of paper would increase the value. Also if the pistol has an original matching serial numbered magazine it will enhance the value.
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