1950's. 11x16" with thin cardboard covers and six thin cardboard pages printed on front sides. Front cover has choice color illustration featuring a scene involving the items that can be constructed from this book including two space men firing guns, flying saucer and rocket ships flying through space with earth visible in background. Contents listed on the front cover are "Flying Saucer That Actually Fly, Giant 30" Rocket Ship, Ray Gun That Works, Space Helmet That You Can Wear, Space Phone Set That Actually Works, Robot Man Mask, Two Space Jet Planes That Fly, Accessories Ammo, etc.". Inside front cover has detailed illustrated assembly instructions. Back cover is the space helmet. A few loose perfs. but all unused and intact including cello sheet behind mask on back cover. Cover VF/Exc. All else N. Mint/Mint. Superb graphics and wonderful design by Jim Jones and Paul Virdone.