This model 580 lounge chair is an early edition and is in a very good condition considering age. The purple Tonus upholstery has kept its color well. It does show some signs of age and use to the feet and where the fabric meets the sliding feet. The design of this chair goes back to 1966. This chair is not to be confused with the model 598 'Groovy' from 1972. That chair does have metal slides over the feet. The designs of Pierre Paulin are highly sought after. Also due to the great interest from museums such as Centre Pompidou (Paris, France) that have a large exhibition on Pierre Paulin from May to August 2016.