Solid stone no hole 481g or 1lb 1oz.  So swinging fast the force would be considerable.  I have weapons with wire on them from the turn of the 19th - 20th century.  Also old hide and leather in very good condition so there might be some age .  The Peruvian Andes high up the environment is cold and dry I believe, which would be good conditions for organic materials, as opposed to wet and warm.
		 
		
		
		
		
		
		
		
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