Late hans wegner or Kastholm stainless steel chair identification german / scandinavian  

A Dutch dealer sold this one and attributed it to Rudolf Glatzel for Walter Knoll but did not show any marks or labels.   

This one on Ebay Germany has a Dreipunkt label.  Glatzel did design for them. Saw a note that the series was called Art Collection and it was later "adopted" by Walter Knoll.

Thanks for that, You got a paypal address and I will add some money. 

Payment not necessary.  Maybe you can return the favor someday.  

Ok Mark. Thanks for that. If you look up Desthetica on ebay you will see the kind of stuff I have information on and you can contact me there if you need a catalogue for instance or a pdf.

Thanks, Frank, will do.  Looks like you have quite the collection