Thanks for the close ups. 
As Detlef brought up it's related to the best carved Palembang JD-hilts. 
I am quite picky nowadays but this is just astonishing!!! 
It's much better than the one in the Royal collection. 
 
Michael 
 
PS It's interesting that the open flower carvings on the blade resembles 
the Malay work from Banjarmasin (like sometimes seen on Beladah Belabang)?
		 
		
		
		
		
		
		
		
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