Jakob Philipp Hackert (Prenzlau 1737 – 1807 San Piero di Careggio). View of the "Torre di Mezzavia di Albano" tower and the Roman Campagna. Pen in brown ink over pencil, watercolour in grey, pink and blue. 51,1 × 66,7 cm (20 ⅛ × 26 ¼ in.). [3171] Provenance: Estate of the artist / Friedrich Christian Behrendt, Berlin / Princess Caroline von Sachsen-Weimar-Eisenach (1786-1816) / Princess Helene von Mecklenburg-Schwerin (1814-1858) / Duke Robert de Chartres (1840-1910) / Duke Jean de Guise (1874-1940) / Prince Henri d'Orléans (1908-1999) / Private Collection, Rhineland (since 2000)