Don César de Bazan is an opéra comique in four acts by Jules Massenet to a French libretto by Adolphe d'Ennery, Dumanoir and Jules Chantepie, based on a play by d'Ennery and Dumanoir first performed in 1844. This in turn drew on the popular character of Don César de Bazan from the 1838 drama Ruy Blas by Victor Hugo, despite having little connection with the plot of Hugo's drama. This poster, engraved by Célestin Nanteuil, advertised the opera's premiere, which took place at the Opéra-Comique in Paris on 30 November 1872.Engraving credit: Célestin Nanteuil; restored by Adam Cuerden