Charles Melchior DESCOURTIS (French engraver, 1753-820) : Frédérique Louise Wilhelmine of Prussia. Colour copper engraving dated 1791. Carved and gilded wood frame from the Louis XVI period, pediment decorated with a bow and laurel leaves, around the edge is a ribbon and a frieze of hearts. 35 x 25 cm Frame 62 x 49 cm A copy of this engraving is in the Worcester Art Museum.