1972 for a proposed “Post” cereal premium that was never produced. 8.5x11” sheet of construction paper has 6.5x9.5” sheet attached in center w/art in ink, lead and colored pencil. Text is hand lettered including “Inside This Package”. Elaborate design has Fred driving prehistoric vehicle w/large balloon on top and text at right “ Yabba Dabba Dee…And It’s Pollution Free!” At left Wilma is saying “It’s Fred With His New Car!”, Barney says “It’s A 1973- B.C.” as Pebbles watches. Lower left has kids playing w/different color cars, lower right has cut-out design of Fred to sit in car. Bright and Exc. Great design. Comes with “Creative Dummy Specifications” photocopy sheet dated “10-12-72”. Sheet is filled out in ink including “Post Cereal” name and has lead pencil drawing attached in center of art of premium on sprue. Exc. Unique. From the archives of premium creators Sam & Gordon Gold, accompanied by a letter to that effect from Gordon Gold.