We have four pieces of the Circle 1 chair, designed by Karel Boonzaadjer and Pierre Mazairac for Metaform, in the 1980s. 
 
The measurements:
Height: 85 cm
Width: 52 cm
Depth: 56 cm
The seat height is 45 cm
The height of the armrest is 63 cm
 
The chairs are in good vintage condition with some signs of wear.