A striking example of Vasarely's mastery of Op Art, *Eridan* captivates the eye with its precisely engineered geometric forms and rhythmic interplay of color and pattern, creating a dynamic illusion of movement and depth. Published by Éditions du Griffon in Neuchâtel, Switzerland, this rare work is numbered 2/55 and signed by the artist in black ink on a label affixed to the reverse. Presented in its original cardboard box with stamped title, the piece stands as a testament to Vasarely's enduring influence on the intersection of art, science, and visual perception.