The name on the rib is likely the marketer rather than the maker. It would have been made for "the trade" by one of the Suhl makers and sold to them for marketing to the end user. The "made for the trade" guns were often marked with the marketer's name, but not always. The shot barrels show the crown R "repair" proof, but the "repair" is not obvious from what can be seen. If there is a "70' stamped on the extractor or somewhere near the circle 12 that would indicate the shot chambers were legenthened from 2 5/8" to 2 3/4" and reproofed.
Mike
