JEB4866512 Portrait of Rene Descartes (1596-1650), French mathematician, philosopher and physicist - Engraving published in the book ??sLes lettres de Madame de sevigne, de sa famille et de ses amis??? - Private collection; (add.info.: Portrait of Rene Descartes (1596-1650), French mathematician, philosopher and physicist - Engraving published in the book ??sLes lettres de Madame de sevigne, de sa famille et de ses amis??? - Private collection); ?? Jean Bernard; it is possible that some works by this artist may be protected by third party rights in some territories.