Robert Malaval (1937-1980) Transat Marine Campaign R'N'R / Malaval Sound Experience. 1971. Offset printing in colors. 498 x 660. Very nice proof on white vellum, from the edition before the letter of the poster for an exhibition of the artist at the Centre National d'Art Contemporain, justified "H.C.", dedicated "to Marcel Billot" and signed in black felt pen.