Exhibited: Bruun Rasmussen Kunstauktioner, “Krop og Kunst, Golden Days in Copenhagen”, September 2009.

The exhibition catalogue: “Den nøgne guldalder”, Den Hirschsprungske Samling, 1994, mentions C. W. Eckersberg's art school for painting the nude. C. W. Eckersberg started a special summer school in August-September 1839 at the Royal Academy of Fine Arts in Copenhagen. Cathrine Nielsen, called Trine, sat as a model for 75 hours.

Eckersberg writes in his diary about the painting sessions week after week during the summer. 1 August: “Seet i Akademiet et par unge Piger, som ville være Modeller”. (Seen in the Academy two young girls who wanted to be models). 5 August: “I Skolen begyndtes et Billede af en quindelig Modell”. (We started to paint a female model). Many working days followed. 31 August: “Paa Malerskolen, hvor den quindelige Modell var sidste Gang”. (The last day for the female model at the painting school).

C. W. Eckersberg himself painted Trine in a position similar to this, where the model was placed near a source of light (a window). His painting was bought by Superintendent Borch. Eckersberg writes in his diary 29 September: “Tilsendt Forstander Borch det lille Maleri, en ung Pige som fletter sit Haar”. (Sent a small painting of a girl plaiting her hair to Mr. Borch). This painting is today owned by Musée du Louvre. Reproduced in the exhibition catalogue: “Den nøgne guldalder” p. 109 and to the left. Unfortunately, Eckersberg does not mention the names of the other summer school participants of 1839 in his diary. Today we know that another Eckersberg pupil painted Trine, almost en face. The work was reproduced in the exhibition catalogue: “Den nøgne guldalder” p. 111, and sold at Bruun Rasmussen auction 663, 1999 no. 322 for 100.000 kr. L. A. Smith also took part in the session, presumably standing quite close to master Eckersberg himself, although Trine is seen a bit more en face in L. A. Smith's version.