Set of 2 vintage Verner Panton dining chairs

This is a nice vintage set of 2 Verner Panton dining chairs (four have sold). They are all in good vintage condition but do have some minor surface marks and scratches from age. I was told from original owner that they were purchased in the early 70s, however they don't have any visible markings. They are extremely well built and heavy unlike modern plastic reproductions and I believe they are of fibreglass construction. Dimensions of each chair are 19" wide x 18" deep x 17" high to seat, 32" to top. 200$ per chair.