Nice set of four vintage swivel Tulip armchairs model 150 by Eero Saarinen for Knoll International. Designed in 1956.These are from the early seventies.Design classic from the Pedestal collection!The original upholstery is still in good condition, but the foam underneath has deteriorated somewhat. The cushions are still good.The polyester seat shells have some light scratches.The aluminum base has some scratches and pieces of the coating.