1 of 4 Matteo Grassi visitor chair in brown leather 1970sMatteo Grassi visitor chair in brown leather 1970s Brown Leather Visitor chair by Mart Stam & Marcel Breuer for Matteo Grassi, 1970s Bauhaus chair designed by Mart Stam for Matteo Grassi in the 1970s. brown original leather seats. Model: MG5 Visito chair Material: brown leather chrome tubular metal Seat height 45 Condition: Very good signs of wear and tear due to age and use. Some scratches. Chrome excellent. Dimensions Height: 30. 63 in (77. 81 cm)