Hard to say without pics but it sounds like a pre-war commercial Oberndorf Mauser (BUGs and #s) made up for the US market (30.06) or rebarreled. The pad may have been added. Perhaps a B Model (double triggers)? Any number of importers could've brought it in (like A. F. Stoeger) but retailers like V,L&D, Abercrombie and Fitch probably sold it. Like the others said, pics will help.