Rare test issue, with art by Basil Wolverton. Of the 18 posters originally intended for the set, it is believed that only 12 were published, as there are no copies of 2, 9, 10, 13, 14, or 18 known to the hobby. This poster is missing a small piece of the lower left corner and has numerous small tears along the sides. There is an additional heavy crease just over the center factory fold