Lot desk and two contemporary chairs

Office year 1990 in gray metal tubes and yellow leather as well as two matching chairs. The office has files hanging right and left, one under hand that rises. The tray slides. One of the chairs has a swivel backrest, the other has two armrests and no backrest. The yellow leather of the underhand has signs of use (photo) and there are traces of cigarette burns on the right sliding. It is a creation of François Brun and the Carrier workshops. I think it's a unique piece.