It could equally be the Gras bayonet, both the Gras and the Lebel are not a true round spike.  The hole in the handle in this view, a deliberate act? looks like an imitation of the stud on the Gras handle.  It might just be inspired by a general bayonet form.  There are many versions from several countries which have elements that could have been the model
		 
		
		
		
			
		
		
		
		
		
		
		
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