3 Saarinen Knoll Swivel Stools Three Eero Saarinen for Knoll swivel stools. Two of these examples are upholstered in their original black Knoll upholstery the third in black leather. These are in impeccable original condition and may be separated. Post navigationPrevious post: Biomorphic Walnut & Glass Cocktail TableNext post: Walnut Leather & Bronze Prototype Chair by Allen Ditson