The pics of the inner 1st stage rocket show what looks like a BB. It is spring-loaded and these springs have lost their tension somewhat over time. You have to work with them a moment to get them to fully extend to attach securely to the Stage 2 rocket. It is a great toy and one of Marx's most realistic space piece.The item "Vintage Marx Two-Stage Earth Satellite Rocket Toy 1957" is in sale since Tuesday, September 11, 2018. This item is in the category "Toys & Hobbies\Robots, Monsters & Space Toys\Space Toys\Pre-1970". The seller is "raow_20" and is located in Danville, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Uruguay, Macao.