Vintage adjustable chair from the Siemens "Sirona" series, manufactured in West Germany in the 1960s. The chair has a steel frame that is accentuated with chrome-plated elements. The base crown in the lower part is supported by 5 swivel castors. The SIEMENS brand is attached to the frame. It has a well-padded seat and backrest which are covered with a beige, perforated faux leather. In original condition. The covering has opened up on the seat. This could be re-sewn. The backrest has wear to one corner. Originally designed for the medical profession, this versatile chair can also be used in the workshop or office. Height 71cm, diameter 42cm