It's a Peruvian for sure. Long front receiver ring and I compared the "Mauser Original" on it to a Peruvian. Perfect match. The barrel is a proper six groove target barrel so the mystery continues. Should be a ball to shoot though. Purchase included a unused set of RCBS 8.15x46R dies. Form the brass from .30 WCF and Buffalo Arms has the stop ring bullets. I've added a couple of pictures of the markings I am interested in researching.