Hello Martin, 
 
The polished ray skin looks genuine - a good sign. 
 
The blade seems of good quality (including the crisp fuller); OTOH, the width of the blade is much wider in the basal half while the distal half is considerably narrower - unless this was done to repair an edge damage, I am at a loss for any other reason for this shape... 
 
Regards, 
Kai
		 
		
		
		
		
		
		
		
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