Nineteenth century rosewood piano stool

Superb piano stool xixth napoleon III rosewood. Height adjustable thanks to an ingenious stepped system. By turning the seat, the desired landing is adjusted. Under the seat, there is a small plaque "brevet s.g.d.g paris". Seat firm and covered with a burgundy velvet. Perfectly stable, clean and functional, it is in superb condition. Seat diameter: 35 cm. Height (at the lowest): 50 cm. Height (at the highest): 57 cm. Encroachment: 39 cm X 39 cm X 39 cm. Weight: 6.1 kg.