A cheery Keith Haring flag and a serene drawing by Caspar David Friedrich: our pick of the February sales
Caspar David Friedrich, The beach at Wieck near Greifswald (around 1815-21) Master Works on Paper from Five Centuries, Sotheby’s, New York, 5 February Estimate: $250,000 to $350,000 This sketch, from the collection of a noble European family, likely …