It would appear to be intended almost wholly as armour piercing, mail or plate, a bodkin point, except perhaps taken to the extreme in this instance.  I would suggest that it predates the 18th century. 
Adrian
		 
		
		
		
		
		
		
		
		
			
				  
				
					
						Last edited by adrian; 4th June 2012 at 02:43 PM.
					
					
						Reason: spelling error
					
				
			
		
		
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