Sotheby's is holding an exhibition of select works by Monet, Van Gogh, Rothko, Richter and Polke in London from 11 to 14 April. This ahead of the art pieces going on auction in New York City next month.
Artwork on display includes Andy Warhol's 'Superman' from 1981, valued at $6 to 8 million and Henri Matisse's 'Anemones et grenades' from 1946, worth $5 to 7 million.
Another star attraction is Claude Monet's ' Nympheas', from 1905, which has not been seen in public since 1945 and is estimated to sell for $18 to 25 million.
