Jens, 
 
Rajputs started  emigrating to the   peri - Himalayan hills  around  12 century. This process became more and more active by the 16-17 century when a Gurkha kingdom was established. 
I think the Afghani pulwar fully matured from the  Deccani/ N. Indian cup-like form into a full “ pulwar one” not earlier than 17-18 century. 
 If we  combine the calendars, my guess the “ Indian-Afghani” swords came into existence not earlier than that. 
 
Just a  guess.
		 
		
		
		
		
		
		
		
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