I am with Ariel. I dont think the cup disc has ever been closed.  
 
Although it is a different hilt type see also my catalogue pp. 321-323 - picture attached. 
From left to right, NW India/Afghanistan 17th century, Afghanistan 17th top early 18th century and Afghanistan late 18th to early 19th century.
		 
		
		
		
			
		
		
		
		
		
		
		
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