Hi 
Please find attached more images of blade 
A good bit of de lamination or miss forging which I hope you can see 
Also I hope you can see how it is completely flat on one side  
shaping down to sharp edge only on one side with central spine in middle 
I will do a sketch if you think it might help 
Regards 
Ken
		 
		
		
		
			
		
		
		
		
		
		
		
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