Hi Xas, 
 Hope you are fine!  
 
The first blade has a convex edge. How you would call it? And would you agree by the estimated origin? 
 
So the second piece is like guessed Ilocos (Sur?) and not a katana, how you would call it? 
 
Third one a katana, any guess about the exact origin? It's 24.4 inch long overall, blade 18.5 inch and 0,31 inch thick at the base/handle. A very heavy sword. 
 
Regards, 
Detlef
		 
		
		
		
		
		
		
		
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