I don't there is an all matching German RC out there - but never say never.
Electro penciled force matched - Yes - the majority.
I know lot's of guys especially with the late 1990's and early 2000's imports in the US/Canada would MM pieces to at least have the proper codes or period correct parts on their rifles - someone on the old G43 forum even offered this as a service. But the chances of getting an all matching one would be very hard - even with mixing parts.
Now all matching Norge captures - they are out there for sure. Some are MM and they all have a new 30-06 barrel but generally the parts are all matching.
Some RC's went through more of a refurb than others. Some maintain original finish, some have original finish under the RC dip blue, some just have the dip blue finish. Some stocks are way nicer than other (not sanded etc.), some have X's and some don't, some are peened and some none peened etc.