The pic I showed is not from Spring.  BTW, I found my copy of Spring:-)  and can photo the examples from it for general reference. 
 These protrusions may be infrequent on the Ethiopian scabbards, but they do exist.  I know of no other examples of weapons that share such a feature.  We cannot ignore it as a potential evidence of the "berber" sabres belonging to Africa rather than S. America
		 
		
		
		
		
		
		
		
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