This site continues to advertise and take a % of earnings from counterfeit art even after notified and offered official proof the art is fake (Many times accompanied by a fake COA) Be careful. I suggest you never buy anything in a frame because this is where most fakes either in stellar or poor condition are hidden. Aside from that, unless you see a Certificate of Authenticity from a noted expert you take an enormous risk here.
Federal Authorities have listed art Fraud as third in corruption to Drugs and Human Trafficking. You will see this played out on Invaluable and there is a no return policy on Auctions. Counterfeiters have hundreds of tricks they play to sell their garbage on this site and Invaluable turns a blind eye. In my opinion this site is worth the time of the FBI and or the U.S attorney for a full investigation. I'd love to provide testimony. As for the consumer, take your business to only the most reputable of Art dealers. Be safe.