I think the wrangka is Buffalohorn. 
Not as special as rhino, but still quite a large peice of buffalohorn. 
It must have accounted for certain status. 
 
 
Here some more pictures. 
The blade is not cleaned and not photographed in a good way. 
But it gives an impression.
		 
		
		
		
			
		
		
		
		
		
		
		
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