1980s Plaano Chair by Yrjo Kukkapuro for Avarte in Birch Blue w/ Pneumatic Base
This is a Plaano Chair, originally designed by Yrjo Kukkapuro in 1974. This particular example was produced by Avarte in Finland circa the 1980s. The chair is comprised of a steel 5-star base, a seat upholstered in blue fabric, and birch armrests.