Optical Art original heliogravure on thick glossy paper entitled KOSKA-REV made with vibrant blue and grey circles and squares by father of Op Art, Victor Vasarely. From the Portfolio Progressions 3, Editions du Griffon, Switzerland, 1974. On verso: artist and artwork information.

Artist: Victor Vasarely (Hungarian-French 1908-1997)
Issued: 1974
Dimensions: 16"L x 16"H
Country of Origin: Hungary/France

Age related wear.