Frédéric DUBOIS (Active around 1780 until after 1819) Portrait of a Man in an Aubergine Jacket with Blue Collar, Red Waistcoat and White Neckerchief Watercolour and gum arabic on ivory, round form Signed 'Dubois' lower left Diameter: 6.2 cm CIC n° 2024/BE01896/CE Portrait of a gentleman wearing a plum coat, watercolour and gum arabic on circular ivory, signed, by F. Dubois D. 2.44 in. Provenance: Anonymous sale; London, Christie's, 29 February 1972, no. 62 (sold for 150 guineas to Heide Hübner); Galerie Heide Hübner, Würzburg; Acquired from Francis Walter, Alsace, 2013; Pierre Jourdan-Barry Collection (1926-2016); Then by descent; Private collection, Belgium Frédéric DUBOIS (Active around 1780 until after 1819)