8.5” long hard plastic. 1950s. Comes in box nicely illustrated on all sides. One inside end flap loose but here. Box shows lt. aging but VF. Top of ship features 2 simulated knobs, 1 for atomic power reading “Atomic/Stratos/Atoms/Stop” and the other space directional with planets listed “Mars/Saturn/Venus/Jupiter.” Friction works and still produces sparks visible through center exhaust jet. Trace of surface wear to underside but plastic remains bright and glossy. Displays Exc. Neat design.