Hello UB, 
 
yes a typical Burmese dha, end 19th/first quarter 20th century. Handle cover is indeed from ray skin. I have a very similar example in my collection, also with missing scabbard. When I find the time I will take some pictures and will post them for comparison. 
 
Regards, 
Detlef
		 
		
		
		
		
		
		
		
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