*André MASSON (1896 - 1987) Portrait of Hansjörg Gisiger in profile, circa 1950 Charcoal. Signed lower right. 65 x 49 cm Provenance : Hansjörg Gisiger Collection. By descent. [...] The artist whose acquaintance lasted the longest, the one who was closest to me and whose trade enriched me, was André Masson [...] Masson, who claimed never to have regularly attended a school, possessed the most vast, universal and profound culture I had ever encountered" (Gisiger, Et pourtant tout arrive, Mémoires, Lausanne, Éditions l'Âge d'homme, 1998, pp. 154-155).