It's a 1894 damascus barrel. My wife has one just like it and I used to use it on stagecoach shoots 20 years ago. You must load your own shells with black powder, to be safe have a good gunsmith check it out.
Years ago when I went into a gun store and bought a gun, my wife would buy her one too and she likes old guns.
I would contact Remington direct the curator of their weapon museum there can tell you all about it. And it is damascus and only black powder should ever be shot in it. Otherwise it will destroy a fine old piece which would be terrible! Once again I would contact Remington in Ilion NY.