Hummm, Metal... 
Then its either a shiny disc with carved lines on it such as a halter disc/Fruit juice maker machine's disc or a cylindrical tubular structure with carved screw markings on a pipe or a cars' spare plug. 
Well other than this I am clueless. 
Hey guys what are you thinking? Come on and help.
		 
		
		
		
		
		
		
			
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				S a s s a n . 
  
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"My home is where I walk across the street with my head erect.” 
  Heinz  Alfred  Kissinger
			 
		
		
		
		
		
	
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