Hi Ron,
in contrary to many American makers most of the German or Austrian gunmakers signed their rifles, sometimes (as with the Aichinger, at least this is my guess) with the owners name.
I have seldom seen unsigned Jaegers, sometimes there was just a cartouche, if not a name, or both.
Since in the European gild system there were often many men engaged in constructing one rifle, barrelmaker, gunstocker, lockmaker etc. , I really am not sure what parts of a rifle the "gunmaker" who signed the barrel really made.