Detroit Lions Riddell TK suspension model helmet.  The helmet is all original and complete with a datecode on the interior of the helmet from 1974.  The helmet has original striping and logo decals on the sides of the helmet.  There is a player identifier on the rear of #35.  Several players wore #35 during the 1970s but we believe this to be a camp helmet or a preseason helmet.  The helmet has light to moderate wear to the outside as well as the inside.   Just a very rare model in excellent condition ready to go on your shelf to show your friends.