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		#3 | 
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			Join Date: Dec 2014 
				Location: Black Forest, Germany 
				
				
					Posts: 1,241
				 
				
				
				
				
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			I think this is a piece of historism. Original blades can normally be unscrewed from the socket and at the socket there are missing the long feathers (?) to fix the socket at the pole.  These have never been there as far as I can see  
		
		
		
		
		
		
		
	corrado26  | 
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