Really cool toy. It worked outside in the sun but in low light it doesn’t. So as is . Not sure if that bottom piece is a battery or light component. But I couldn’t get it open and didn’t want to force it. And I don’t know if it’s complete but looks complete. It has a chip in the plastic on the bottom front corner. It also has a lot of stains, wear and scuffs. And needs a better cleaning then I had time to do.. So it’s used and not perfect. But still a super awesome piece of toy history. Please see photos for condition. Thanks and have a great day