Jean Hélion (1904-1987) Defense of .... 1970. Lithograph. 448 x 560 cm, printed in colors. Very nice proof on vellum, numbered, dedicated " Pour Monsieur Marcel Billot " and signed in pencil. Slight oxidation and traces of folds at the edges of the sheet. All margins. Edition at 500 proofs. On the back stamp of the publisher : " C.N.A.C. / limited edition to 500 copies / on the occasion of the exhibition / Asse - 1970 ".