Your first image is not “ yet another one”: it is a yet another re- drawing of one of the two  images shown in the Post #7 . They are 3 variants of the same image, and which one was the original source  is a mystery not worth solving. 
 
The astonishing scarcity of physical representations of this pattern suggests IMHO that  they did not exist in reality. Till now we see similar “ oriental scimitars”  only in theatrical objects.  I think the Sotheby’s one is from the same opera:-) 
 
Orientalists did not just depict  the Orient; they have created one  for the multitudes of homebound Europeans. This was one of the very few correct observations of Edward Said.
		 
		
		
		
		
		
		
		
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