Restoration

Can anyone tell me about restoration, or touch up on a luger and how it may or may not enhance the value of a luger. For example: if I own a shooter worth about $450.00 and I restraw, touch up all the bluing provided the gun is not pitted , clean the bore to bright, replace the mismatched wood bottom with a unnumbered replacement what kind of increase in value can I expect to get? My investment would be less than an additional $40.00. Can I now expect to double it's value because new and bright sells and a worn looking shooter is unappealling to a buyer?