Former design desk Florence Knoll International

Large design desk by Florence Knoll. Published by Knoll International in the 1950s. Walnut wood and veneer. Black lacquered metal tube with square section. Knoll International Edition. The original mark is still visible under the tray (see photos). Reference model with 2 hanging boxes and black metallic structure. 1 large drawer - 1 small drawer on the left side. 3 drawers on the right side. I don't have the keys but all the drawers open and close properly. Dimensions - 190 cm in length x 90 cm deep x 74 cm in height.