Jean-Pierre VASARELY, known as YVARAL (1934 - 2002, son of Victor Vasarely) - "Structure cubique 4". 1973. Silkscreen print. Artist's proof on wove paper, justified "E.A I/VII" and signed. Coated with the Editions Denise René dry stamp. Margins. 75 x 75 cm. Condition B (tiny little stain in the center, slight trace of wetness in the upper left corner reaching a little to the subject, a few light freckles in the slightly sunned margins).