This kris is of Malay work/origin in hilt.  Seen these from this region before and may be Moro influenced long ago.  Not what I would consider Moro itself however, except perhaps the blade from what I can see (Sulu blade?).  Sulu had many contacts and even settlements in the region at one time.   
 
Very beautiful piece.  I like the silver work.  Nice horn - is it rhino?
		 
		
		
		
		
		
		
		
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