Kubur, you could well be correct. RDGAC's assessment of the tabs on sword #3 are: 
 
Quote: "At said base are a pair of large tabs, seemingly forge-welded or similar to the flats of the blade, and presumably intended to broaden it a little and allow the cross-guard and grip a firmer attachment to the base and tang, though that's probably an erroneous presumption." 
 
Regards, 
Ed
		 
		
		
		
		
		
		
		
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