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					Originally Posted by Jim McDougall
					
				 
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 The helmet has no comparison to anything whatsoever.  
 
..., but not sheet armor. The helmet looks like a baseball cap, nothing like anything Ive seen in armor.  
 
Just illustrating these kinds of conundrums have other counterparts. 
			
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 Roman Coolus helmet ~200BC: 

 Baseball cap 'Visor' is a protective neck piece. Also google 'secret helmets' worn under cloth hats. I've seen one with a circular top bit removed some place before.