Hi,Jim! 
I agree it seems like only cross guard is authentic, though I would say it was taken from a Kahetian saber , not from a shamshir sword type. But again it is hard to say for sure, you might be right.  
The blade however is not very good imitation, probably early replica attempt. 
Best, 
VK
		 
		
		
		
		
		
		
		
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