Looking for any info on R.P.Bruff or Bruff Brothers & Seaver out of NY.. All i can find is info on the pistols and i need info on shotguns. A friend has a 16 ga,double barrel percussion ,,w/ damacus barrels made between 1750-1830,,,german walnut checkered stock w/ scroll engraveing... Any iformation on these shotguns would be greatly appreciated. Thanks Donna