Hello Mark, 
 
This seems to be a nice Sekin blade from the Padang Highlands - so it's most certainly Sumatran rather than from Java. Please post more pics of the base of the blade as well as the fullers! 
 
I'd guess this got rehilted & a new scabbard in Badek-fashion a while back. 
 
Regards, 
Kai
		 
		
		
		
		
		
		
		
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