I saw this on eBay. I totally forgot this. I was in third grade in 1963. I wore my first one out, and made my mother buy me another one. It bolts on to your frame just like a china girl. It runs on a battery, and all it does is make noise like a motorcycle. There's a lever to control the volume, that's your throttle. I loved this toy.
I think I've just figured out why I love china girl motor bicycles so much now. Before even starting school I was putting baloons in my spokes. I was born with the sickness.