a black leather and steel 'PK-91' stool, E Kold Christensen, Denmark.
Secondary leather, maker's mark.
Christoffer Harlang (red), "Poul Kjaerholm", Arkitektens Forlag, 1999, se sid 24-25. I denna publikation kallad "PK-41".
Designed in 1961, from 1982 produced by Fritz Hansen.