The handle is old and worn.  God only knows what kind of  degrading changes  it might have  undergone. My guess of  cattle horn  is based mainly on the presence of layers of separation. Rhinos usually do not have it, cattle often does. 
 
I can only second a recommendation  for etching. 
 
Overall, I am somewhat pessimistic about the possibility of a precise dating. But in any case, it is certain that you got yourself an old Persian-style Shamshir belonging to a fighting man. For me, with my tastes and criteria of worthiness and attractiveness, it would be more than enough.
		 
		
		
		
		
		
		
		
	 |