Hi Sajen n Pieje, 
Sajen your shield is (indeed) a typical Bontoc shield. Pieje, your shield would to my opinion be South Kalinga. 
  Here are some (older) pics of my N. Philippine collection; first the Bontoc 'department',  second the (North) Kalinga 'department'. 
 
I think Pieje means the piece of blade visible from your Kalinga headaxe )right side), not Pieje?
		 
		
		
		
			
		
		
		
		
		
		
		
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