Touching the surface has removed the patina and revealed the grains of the microstructure of the cast metal by natural etching, as seen in the detail on the right. Paul Landowski (French, 1875–1961), Michel de Montaigne, ca. 1931, cast by Didier Landowski (French, b. 1940) at the Blanchet-Landowski foundry in 1989, H. 200 cm (Ville de Paris, place Paul-Painlevé).