Wildenstein & Company - London - U.K.

Over the past century, five generations of Wildensteins have been involved in the business of fine art, helping individuals, museums and foundations around the world to build their collections of paintings, sculpture, drawings and tapestries.
We at Wildenstein have a unique ability to locate works of art for our clients, either from our unparalleled stock or, thanks to our incomparable research facilities, from outside sources. We pride ourselves in maintaining a close relationship with our clients as their collections develop and expand.

Website : http://www.wildenstein.com/main.html