Official poster of the exhibition "Marc Chagall. The passer of light" at the musée national Marc Chagall, Nice from 18 September 2021 to 10 January 2022. Marc Chagall, in collaboration with Charles Marq, La Rose bleue (1964). Second state of the rose window in the ambulatory of Metz Cathedral. Dépôt du Cnap au musée national Marc Chagall, Nice. Photo : © Rmn-Grand Palais / Adrien Didierjean. © ADAGP, Paris, 2021.