Screw piano stool KOHN N°631 (Klavierhocker) Curved wood. Bistro Kohn stamped piano stool below the waistband. This model was manufactured from 1900 to 1915. This stool is stamped "November 25, 1911" in the Kohn deWsetin factory. - The caning is perfect, nine to six threads, manual - (weaving SR) Empire black tint. Perfectly stable, variable height from 42 to 65 cm, adjustment screw without play. Seat diameter: 40 cm More photos and information on request. Parcel France and Europe, removal Alsace.