Vintage Friso Kramer stool low model

Vintage Industrial stool designed by Friso Kramer in the sixties for Ahrend de Cirkel. This model is the low version and is adjustable in height. The frame is light gray and the seat is wood. The condition is reasonable, the frame has obvious signs of use (oxidation), please see the details. The dimensions are 34 cm in diameter and 42 to 61.5 cm high.