Thanks a lot guys, that was really helpful and is interesting. 
 
Fernando is right, i was or am aware of that or similiar marks but i have seen them only in triples yet like in the pics of Fernando and corrado, not just one single mark. What i was wondering is if the single mark is the same maker/source as the triple marks or maybe something different that was copied or was similiar by accident. 
 
And here is a pic of the sword in total.
		 
		
		
		
			
		
		
		
		
		
		
		
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