No doubling...die deterioration. Go to Wexler or Variety Vista and select the ddo or ddr for 1970. Then compare those with your coin...imo...Spark
Generally the authentic doubled die varieties have other tells on the surface that can identify them.
hey Joseph seaman i don't see what your seeing. hope this helps. good luck next time man. the picture above is for the 1970-D DDO, if you will go to this webpage that Variety Vista has you will be able to look thru some very good close up pictures of that years errors. http://www.varietyvista.com/09b WQ Vol 2/DDO Listings.htm, good luck man