Nice Tai Yai (Shan) knife.  This type is popular as Ian mentions throughout the Golden Triangle.  It's not a monk/priests knife, but more of a decorative personal knife.  Even if you don't see engraved yantra on the knife, almost all knives are bless and may have tailsman on them, in them/ are themselves a tailsman for protection.  The ivory carving is a fairly common seen motif of a demon holding two Naga's.
		 
		
		
		
		
		
		
		
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