Vintage Warren Platner for Knoll 32" Round Chrome Base Ottoman Mushroom Stool. Item features chrome metal base, red velvet upholstered "mushroom" seat, clean Modernist lines, great style and form. Item is unmarked and is possibly a vintage custom conversion from a Knoll Platner Coffee table to a large ottoman. Unconfirmed. Circa Mid 20th Century. Measurements: 18" H x 32" Diameter.