Who: Gerhard Richter
What: One of his series of Cloud Paintings (Wolke) treating the subject in different climatic conditions.
Where: On sale at Sotheby's Contemporary Art Evening Auction on the 12th February 2013 for an estimated 7-9 million pounds.
When: The painting is dated 1976 on the back
Take a look at some of the breathtaking works on auction at this event.