Hi Barry, this is a Maranao barong.   
 
Yes I have seen this form before, and the okir is Maranao.  This one appears somewhat later to me, like WWII.   
 
How and why the Marano have a barong, I can only guess that it was a later Sulu influence?  I have not seen earlier examples of Maranao barong so far.
		 
		
		
		
		
		
		
		
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