In Madura or Jawa this hilt could be recarved, outside of there it needs to be replaced. 
 
This would have been a nice hilt, & to get an old one of similar quality will cost, but in my opinion it would be money well spent. 
 
Yes, it is a Madura blade, most probably second half 19th century. 
 
It also needs a scabbard, and as mentioned, this would not be easy.
		 
		
		
		
		
		
		
		
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