I posted this on the German Gun Collectors site, but since it is a double rifle I thought it might be of some interest here.

This rifle is a O/U swivel barrel rifle, about .58 Cal. The maker is inlaid in gold on the barrels and engraved on the side locks, "Keidusch/Weyerburg". I can't find any reference to either the maker or the location by those spellings. Any help would be appreciated. Thanks, Larry