ALECHINSKY – TOPOR ‘Oniroduc’ Roland Topor’s trick question. Paris, Arte, 1970. Poster. 100 x 68 cm (one small tear). Poster created to mark the publication of Roland Topor’s novel of the same name. One of 100 numbered copies, signed by Alechinsky and Topor. Ref. Pierre Alechinsky, *Les estampes de 1946 à 1972*, no. 436. High-resolution photos: https://bit.ly/hdv-lausanne Exhibition: LA SALLE, 20 rue DROUOT, 75009 PARIS Thursday 8 October and Friday 9 October 2026, 10.00–18.00 Live closed-door auction, 1004 LAUSANNE – SWITZERLAND: Monday 12 October 2026, 2.00 pm Lot collection with no delivery charges in PARIS, LYON, MARSEILLE and LAUSANNE a few days after the sale. Or dispatch from FRANCE at the buyer’s expense via the carrier of their choice.