Attributed to François-Joseph BÉLANGER (1744-1818) Project of a dome with hexagonal caissons, animal theme Sanguine, pen and red ink. Various annotations and profiles. 38,5 x 23,5 cm Various annotations on the colours and profiles of the caissons. This rare working document can be compared to Bélanger's inventions for the Count of Artois at the Pavillon de Bagatelle.

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