LONDON.- From 20 January 2010, Christie’s will host a public exhibition showing masterpieces by Pablo Picasso, Pierre-Auguste Renoir and Natalia Gonchorova that have been unseen in public for nearly 40 years, as well as an outstanding masterpiece by Yves Klein and important works by Henri Matisse, Peter Doig, Rene Magritte, Frank Auerbach, Kees van Dongen and Martin Kippenberger. These are the leading highlights from the forthcoming series of auctions of Impressionist and Modern Art and Post-War and Contemporary Art which will take place at Christie’s in London from 2 February, and which is expected to realise in the region of £120 million.