News broke that the J. Paul Getty Museum has acquired a collection of drawings by artists such as Michelangelo, Edgar Degas, and Peter Paul Rubens and a painting by Watteau from a private U.K. collection. The Watteau was purchased in a 2008 auction for £12.4 million ($24 million), while the Michelangelo sold for $7.7 million in a 2001 sale.
One article places the value of this deal at about $100 million. I guess having an endowment of $6.5 billion helps!