A magnificent collection of masterpieces highlights Sotheby's upcoming Impressionist and Modern Art Evening sale (26 February | London), including a unique work by Magritte that juxtaposes the profile of a Native American with that of his beloved wife Georgette. Also featured is a charming bouquet of flowers by Chagall, an emotionally complex bronze by Rodin and a spectacular sunlit view of Venice by Monet. Click ahead for more highlights.