Name: Mystery Spaceship.
Origin: Great Britain (Wales!)
Date: 60's
Manufacturer: Marx.
Type: Gyro powered.
Action: Crank handle winds up gyro motor. Balances and defies gravity.
Details: Big brother found this for me - he didn't tell me what it was but started to wind the gyro over the phone. I knew immediately what it was just from the sound. Missing lots of small parts such as Astronauts, moonmen, rocket launcher and space car. I have got the instruction sheet though and the box.