Victor Vasarely, Réponses a Vasarely (Responses to Vasarely) (1974)

The complete set of 12 prints in colours, including 6 heliogravures and 6 screenprints, on smooth wove paper, the full sheets, with title page, texts and justification, the 6 heliogravures bound, and the 6 screenprints loose (as issued), all contained in the blue fabric covered portfolio.