set of 8 wicker chairs model 'italia 100' from the 1960s, Netherlands

set of 8 rattan wicker vintage design chairs.
Tubular black metal frame and rattan seating. 
Minimalistic and sleek design, beautiful patina on the wicker in combination with the matt black metal frame. The chairs are very light, the tubular is strong and hollow. Some repairs are made on the rattan and one chair has a slightly different frame then the other ones (see picture). 
Made in the Netherlands, 1960s by Rotanhuis.
 
80 cm H, 46 cm W, 50 cm D.