Édouard Pignon (1905-1993 )Poste r for the Salon de Mai, 1975Colour lithograph. Proof on vellum, from the edition before the letter, justified "H.C.", signed and dated in pencil. Strong trace of oxidation under the passe-partout. Numerous small accidents and folds on the surface. At sight : 64 x 49 cm. Frame. Provenance :Gaston Diehl (1912-1999), historian and art critic .