Dutch vintage Industrial design chairs, set of 4 pyramid chairs. Designed by Wim Rietveld in 1960 for Ahrend de Cirkel and awarded the Signe d'Or. Special industrial chair with black metal frame, armrest and wooden seat. The condition is fairly good, the frame has clear traces of use and also the seat has some traces, see the details. The dimensions are 53 cm wide, 53 cm deep, 47 cm seat height and 81 cm high.