Joustra crane truck

Truck crane brand joustra, goliath model, toy of the 70s in sheet metal and plastic. The cab and chassis are made of sheet metal. The bucket is tilted manually, the crane arm extends by sliding, there are two dials that allow the arm to be raised and the hook to be raised by means of a pulley. All maneuvers are possible. It is in good condition, all functions are valid, it runs well. It will only be necessary to think about doing the revision every 10000 km...