Hello Bart, 
 
A complicated question. 
Especially when Keris are concerned. 
The newmade blades are sometimes so well made. 
 
I often use the 'SEARCH' function on this website to look for earlier threads and see what was discussed and if pictures where posted for comparison. 
 
Good luck, 
Willem
		 
		
		
		
		
		
		
		
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