Ten Most Expensive Paintings in History

The other day I posted ten of the most expensive photographs sold as of today. My curiosity was aroused on the list of expensive paintings. Before I did my Internet search ( see site below), I thought that the Number One has to be a Picasso or a Van Gough. I am mistaken as listed in the following site as follows: Before you open the link, can you give me an educated guess? Enjoy the paintings!

The Scream-a familiar painting in my memory, but not the Number 1.

http://www.telegraph.co.uk/news/worldnews/northamerica/usa/11596376/The-ten-most-expensive-paintings-in-history.html