Heinmot, I can provide all the services required to get your gun back to factory condition. Here is a plated G date Luger I recently restored. This ratty looking G date was on another Luger's pitted frame. Top cannon needed lapping to fit to frame,taking off Chrome (not nickle), rust bluing, strawing, fire bluing. Here are the BEFORE and After pictures.
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<a href="http://members.rennlist.com/lugerman/CCGDateB2.jpg" target="_fullview"><img src="http://members.rennlist.com/lugerman/CCGDateB2.jpg" width="400" alt="Click for fullsize image" /></a>
<a href="http://members.rennlist.com/lugerman/CCGDateB3.jpg" target="_fullview"><img src="http://members.rennlist.com/lugerman/CCGDateB3.jpg" width="400" alt="Click for fullsize image" /></a>
<a href="http://members.rennlist.com/lugerman/CCGDateA1.jpg" target="_fullview"><img src="http://members.rennlist.com/lugerman/CCGDateA1.jpg" width="400" alt="Click for fullsize image" /></a>
<a href="http://members.rennlist.com/lugerman/CCGDateA2.jpg" target="_fullview"><img src="http://members.rennlist.com/lugerman/CCGDateA2.jpg" width="400" alt="Click for fullsize image" /></a>