Black charcoal, wiped and partially heightened with white, on blue wove paper. 1839. 21.2 x 26.4 cm. Inscribed and dated “Helfendorf den 19ten July 1839” in the centre of the lower margin ...

The total value of an artist’s artworks sold at auction over a specific period. This metric reflects the artist’s overall market activity and demand in monetary terms. The middle value of all realized ...