Not sure about the age, but am inclined to think 19th century. Regardless, I was drawn to the artistic craftsmanship of the throat and tip areas. It reminded me a bit of the craftsman who created the William Latham powder horn (seen last).
For some reason I could not remove the stopper. It is stuck good, maybe glued?? It is definitely a separate piece of the tip area. There is 12 carved flutes(facets) to the throat and crisply done. The base plug appears to be either mahogany or walnut and is not round, but rather fitted to the shape of the horn butt end and then carved that appears very well, if not equally, spaced. Needs a cleaning because of some areas that collected dust. Must have been hanging someones' wall for some time. Enjoy.
Latham Horn