Three point linkage (rear) for Siku tractors.
You can easily take a Siku tractor apart by removing the screws at the bottom of the tractor. You can put the new hitch in place again.
This is hitch number 6732. The number is pressed in the hitch which you can identify by removing the hitch from the tractor. 6732 is typically a hitch for the older Siku models.