A friend bought this gun at an auction and the only name on barrels is G. M. Standhardinger in Degersheim.
it is a very nicely made gun. There are no markings any other place, including inside of locks, bottom of barrels and receiver's water table.
Here are some pictures.
It is a 16 gauge, barrels are 33 3/8" right bore is .666, choke constriction .005, left bore is .662, constriction .004. Chamber length 2 1/4". Weight is 6 lbs. 14.2 ozs.
Barrel release and back end of trigger guard look to be made of horn. The engraving is very nice, screws are all engraved. Butt plate is metal and has widows peak
The only thing I came up with is Degersheim is in Switzerland.