The cover of the present example is a variation on that normally found atop a flaring cylindrical sugar box. That the two are original to each other should not be doubted, given the identical ground color and hand of the bird painter, the similarity in palette and the idiocincratic way of painting the birds' feathers.
The present sugar-box is in the smaller of the two sizes inwhich it was produced. See Antoinette Fäy-Hallé and Tamara Préaud, Porcelaines de Vincennes, les origines de Sèvres, Exhibition Catalogue, Grand Palais, Paris 14 October 1977 - 16 January 1978, p. 82, no. 185.