After checking them out I have to give up. My project was to restore them fully and I don't have the time&resources to commit to this.now.
They are at my place. If anyone else is interested I can take them to HS (provided you get your storage request approved first) and I'll cover the cost. If you have your own transport I will give you a hand, but they don't fit in a standard car, not even a black cab, it needs to be a van or SUV.
The chairs look really great. The only problem is that they are wobbly and they need a new metal cup on the upper side (see pictures here:
https://drive.google.com/open?id=0B-HnE0gx34xPeUpEdUZ0ekt5cHM). There is a pic of similar chairs in good condition, the others are the actual chairs we are discussing here.
In pics-1 2 and 3 you can see what needs repairing. There is a cup in the upper side of the ball where the rod fits. The cup has been slightly oversized by use and now it's wobbly. It is fixed with resin to the upper side of the chair. So ideally you would need to replace that cup or make it fit snuggly again to stop the wobbliness. All other defects are aesthetic.
Any takers please let me know before the end of the week.
Cheers!
Antonio