This Drilling was retailed by Paul Mossiers, Junkernstr., Breslau, Silesia, who opened his business in 1897.
It is made to Jacob Roehmer's German Patent DRP #72583, 10.14.1892
see: http://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=DE000000072583A
for the set/single trigger arrangement. Jacob Roehmer, Suhl was the manager of the "Römerwerk", mostly a machine shop and parts factory supplying the guntrade, though they made guns of their own too, like the unique "Roemerpistole",which could be converted to a selfloading rifle, or the selfloading "Beckerflinte" shotgun. Many "name" gunmakers like Dornheim, Greifelt, Thieme & Schlegelmilch, Stadelmann, several Kesslers, Funks, Jungs were shareholders.