Sonia Delaunay (Odessa 1885 - Paris 1979) "Rythme couleur" Paris 1971 gouache on paper 56x39 cm Signed and titled 12-8-71 lower right Signed, titled, dated 1971 and inscribed no.1842 on the reverse Provenance Sabine Hettner Collection, Paris Private collection, Milan Exhibition "Disidentico. Maschile/Feminine and Beyond" Palazzo Branciforte, Palermo, 1998, p.152 in catalogue Richard Riss confirmed the authenticity of the work This work registered in the Archives with n. SD 17 902 1842 This work is accompanied by a photo-certificate issued and signed by the artist, dated 15-4-74