Ungvar B9 chair says Le Corbusier

B9 chair in belted wood, manufactured by the ungvar factory in austro-hungary on the models and production plans of the famous french house thonet. This model says le corbusier because of its personal use for these offices and apartments. Originally cannée, it is now covered with wooden cake covered with velvet ecru fabrics. Label present on the structure but very degraded, I attach archival photos attesting.