In the upper part there is a portrait of King Charles IV of Spain, with a violet marble top. Provenance: The Collections of Princess Ismene Chigi della Rovere, Christie's auction 4 February 2015. Width cm. 127 total height cm. 192. Each object in our Gallery is sold with a certificate of authenticity issued by an Expert of the Court and the Chamber of Commerce Industry Handicrafts and Agriculture of Genoa