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					Originally Posted by Oriental-Arms
					
				 
				Hi Andrew 
 
No good answer really. A little bit from the blade shape and a lot of intuition, but nothing to substantiate it 
			
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 No suprise that your intuition was dead-on.  
I've never seen one of these before, and you come up with two!  Outstanding.
Perhaps PUFF can shed some light on where this form originates.