ArtworkLe Chef-d'oeuvre inconnu (The Unknown Masterpiece)Sign in to savePablo Picasso — published 1931, reworked late 1950s — Book with 12 etchings hors-texte, 67 wood engravings, and crayon, with black morocco bindingArtwork · Art Institute of ChicagoBook with 12 etchings hors-texte, 67 wood engravings, and crayon, with black morocco bindingArtistPablo PicassoDatepublished 1931, reworked late 1950sMediumBook with 12 etchings hors-texte, 67 wood engravings, and crayon, with black morocco bindingView at Art Institute of Chicago · Open Access