the thing is that this hawkbill knife may not have had a special function at all. 
 
Most probably its quality of execution far out-performs function.  
 
I don't think this had any ceremonial purpose and although grand, this was a simple utilitarian knife and , as suggested from its hawkbill shape, supposedly used in agricultural ( it is obviously meant to pry and or pull while cutting) context.
		 
		
		
		
		
		
		
		
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