Ian thank you for your knowledge.  I was not aware of this feature of Moro kampilan. 
 
In this situation then, I would agree with your T'boli attribution of the blade.  Again for clarity sake, the T'boli live on Mindanao and do a lot of trade, and there was a lot of trade between the Visayan Islands and Mindanao.
		 
		
		
		
		
		
		
		
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