I think this is it...:
Vintage 1930's Rocket Scooter Skate
Vintage 1930's Rocket Skooter Skate.
This piece was sold as a scooter with the option of removing the handle and using it as a skateboard, thus the name Skooter-Skate.
This is one of the many precursors to the skateboards as we know them today.
This scooter has ball bearing wheels.
Approximate Measurements
The scooter measures 26" tall and is 13 1/2" long and 6 1/4" wide at its widest point