Maria Helena VIEIRA da SILVA (1908-1992) Lightning, 1965 Burin on copper, in black, signed in pencil in the lower right-hand margin, not justified Edition of 175 proofs on Rives and 20 proofs reserved for the artist, like ours H. 47.5 cm - L. 33 cm (as seen) Reference: Yves Rivière, Vieira da Silva, Les estampes, 1929-1976, Paris, Arts et Métiers Graphiques, 1977, reproduced and described, page 73 under n°86