Hello Kubur, 
 
These are very beautiful blades, the dagger is typical for Qajar-era. 
 
But I see snakes on Qajar-blades for the first time, very interesting. 
 
All I can say is that European medieval swords also often got a snake in the middle of the blade. As far as I know no one really knows the meaning of the snake. Maybe something religious or the blade is deadly like a snake. 
 
Here is my Qajar-era dagger before and after restoration. Not completely finished now, the contrast is too weak. 
 
 
Roland
		 
		
		
		
			
		
		
		
		
		
		
		
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