Thank you very much for your explanations Raf! 
 
The auction house is indeed a good source for axamples of artificial patina. I studied them and I canīt find corresponding examples. It looks different and much more inhomogenious on my sword. 
 
When I find the time I will try to reproduce this electrolysis aging process. might be interesting. 
 
Kind regards 
Andreas
		 
		
		
		
		
		
		
		
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