David, Rick,  
 
My initial thoughts when it arrived were north east coast peninsular, but I soon forgot the features of the Gandik and was lost in the broad bevelled edges and followed another path and have been lost in Sumatra.   
Given the almost mono-steel appearance and the nature of the heat treatment, these points are typical of Patani through to Terengganu. 
 
As you suspect, it is likely better placed in Malaysia. 
 
Gavin
		 
		
		
		
		
		
		
		
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