Set of 2 Matteo Grassi visitor chairs in dark brown leather 1970s ItalySet of 2 Matteo Grassi visitor chairs in dark brown leather 1970s Italy 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: good signs of wear and tear due to age and use. Some scratches. Chrome excellent. Dimensions Height: 30. 63