I know of a similar one with horn grips and a less fancy grip divider but with tat same knurled circle mark. 
 
Pictures, a few. Afaik, still on the market. 
 
Cheers 
 
Hotspur; I have a small ear white grip from roughly 1800 that has the ya ali mark on which I have seen several
		 
		
		
		
			
		
		
		
		
		
		
		
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