Jean-François Janinet (1752-1814) Marie-Sophie-Frédérique of Hesse-Cassel, wife of Frederick VI, Queen of Denmark. About 1789. Tool engraving after C. Höyer. Diameter of the subject : 75 ; copper 120 x 150. Portalis and Beraldi 143 ; I.F.F. 59. Color print. A very fine proof, trimmed laterally on the plate cut, with narrow margins at the head and foot. The original, a miniature by the painter Cornelius Höyer, is in the Royal Danish Collection at Rosenborg Castle. It was made around 1789, when the painter was in Paris. (Inventory of the French collection, 18th century engravers, volume XII, n° 59).