Please note that this work is published in Turi Simeti, Simeti, Dogana 2009, p. 39, illustrated in colour
This work is registered in the Archivio Gianni Colombo, Milan under number 1142.
Please note that lots 13, 14 and 15 by Roman Opalka will be sold as one lot (13A) with an estimate of £240,000-360,000.
Please note that the correct media for this work is sewn canvas.
This work is registered in the Arman Studio, New York Archives under number 8305.61.001.
Please note that this work was executed in 1965-66 and it is registered in the Fondazione Lucio Fontana, Milan and the correct provenance for this work is Galerie Leger, Gothenburg.
This work has been requested bythe Museo Chillida-Leku, Hernani for an exhibition to take place at some point 2011. this work has been exhibited in Paris, Galerie Nationale du Jeu de Paume, Eduardo Chillida, 2001, p. 120, illustrated in colour