Honestly, THIS piece came to mind when I saw yours, although clearly unrelated, except for the N. African origin. 
For whatever it's worth, I had this piece for almost three years before I finally ID'd it,  and when I did I felt entirely foolish! 
It was the botton on the tip of the scabbard that gave it away. 
        Mike
		 
		
		
		
			
		
		
		
		
		
		
		
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