Johnny, 
I am intrigued by the hilts on these swords:- 
 
1, Do they all have that window or fenestration on one side? i.e. Nos 1 and 3 show the "reverse", so's to speak, of nos 2 and 4? 
 
2, it almost looks as if the scabbard pushes up inside the hilt so that the blade can then no longer be seen through the window. On no 4 the scabbard even seems to have a tongue designed specifically for that purpose. Is this the case? 
 
If so, I've never seen anything like that before , or any reference to it. 
 
Regards 
Richard
		 
		
		
		
		
		
		
		
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