In which painting by which painter can you find this woodwork?

Details 320 came from Caspar David Friedrich's Woman at the Window (1822). Friedrich often painted figures with their backs to the viewer. The picture can be found in the National-gallerie, Staatlicher Museen, Berlin.

The first three correct entries drawn were from: Ann Burden of Penrith, Cumbria; Ian Scott of Edinburgh; Hugh Rorrison of Leeds. Congratulations to all.

Each will receive a bottle of champagne, as will the winners of this week's competition. Answers on a postcard (to arrive by Wed 12 Feb) to: DETAILS 322, Arts Desk, IoS, 1 Canada Sq, London E14 5DL.