Paul-César Helleu (1859-1927) The Sphinx. Circa 1900. Drypoint. À vue : 310 x 330. Very fine proof on white vellum, signed in brown pencil. Margins. Frame (not examined outside the frame). Joint: Paul-César Helleu (after). Le Visage encadré. Heliogravure after drypoint. Sight: 640 x 485. Very fine proof on white vellum. Full margins. Drypoint stamp: Les Amis de Paul-César Helleu. Frame (not examined outside the frame). Ens. 2 p.