Sonia Terk Delaunay (France/United States/Russian Federation/Ukraine, 1885-1979) Orphic lithograph in colors on Arches paper titled "Helice Olympie", depicting concentric circles and shapes in shades of blue, green, red, yellow, black, grey, and white. Numbered 75/75 lower left margin, in pencil, and signed lower right under image. Arches watermark center right margin (slightly obscured by mat). Each edge partially secured to off white mat with old masking tape and housed under glass in a metal frame. Sight – 26 1/8" H x 20 1/8" W. Sheet – 29 3/8" H x 22 1/8" W. Framed – 30" H x 24 1/2" W. Circa 1969. CONDITION: Overall good condition with light toning. Minute areas of acid burn visible en verso. Areas of old tape residue to each edge.