Harry Bertoia for Knoll "420C" Black Wire Chair, lacking seat cushion, unmarked. 30" H x 21" W x 18" D; seat: 18" H. Provenance: From a 333 East 75th Street Estate. Keywords: Modern Furniture, Designer, Seating, Mid-Century Modern, MCM, Minimalist, Minimalism, Italian/American designer, Interior design, Decorative Arts