Sorry, To me it looks like a modern piece,  
if it was a conserved piece I do not think the angles would be so sharp, when removing the metal to bring the surface down to smooth  all the definition of the piece would be lost 
More pictures and angles of pictures would help define opinion though. 
 
I have done a fair bit of restoration on items and to me to take a file or a grinder to a surface to remove blemishes would be many a bridge too far 
 
Just my opinion we are  all inviduals  
 
Ken
		 
		
		
		
		
		
		
		
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