拍品专文
The present miniature derives from a rectangular oil on canvas portrait by Virgilius Erichsen of 1764, now in The David Collection, Copenhagen, inv. no. 21 1962. For further information about the French artist working for the court in St Petersburg, Jean-François Sompsois, see N. Jeffares, Dictionary of pastellists before 1800, London, online edition, 10 July 2012, verbo Sompsois, p. 1.