Does anyone know of or have any info on an old double barrel that has Theate Freres, Liege on the top of the rib. I don't see any other kind of manufacturer name.It is a 16 ga SXS. It also has para polvera sin humo on the rib as well. I have not been able to find any info out on it. Any help would be appreciated. Oh it is a beautiful shotgun.