Roberto MATTA - "Orchestra" This original Matta lithograph is from the scarce limited edition catalogue published in 1979 by the atelier Poligrafa of Barcelona, in conjunction with the prestigious Redfern Gallery of London. 25.5 x 19 cm., on vélin paper. Not signed or numbered, edition of 1000. Very good condition. Ship worldwide with tracking and insured shipping. ** Roberto Sebastián Antonio Matta Echaurren (1911 – 2002), better known as Roberto Matta, was one of Chile's best-known painters and a seminal figure in 20th century abstract expressionist and surrealist art.