Getting money back from auction house for Picasso Lithograph
Hello all: If someone could please give me some insight into my dilemna, I would very much appreciate it...
I purchased a Picasso lithograph at a NYC auction house 2 days ago. The Certificate of Authenticity claims it is the "tete de femme au profil" limited edition 150, ex. 115 published in 1970, but I came across a webiste that is selling the lithograph under a different name AND a later publication date (1979 - posthumous). That website is:
http://art.goantiques.com/detail,pablo-picasso-estate,554061.html.
The lithograph I purchased has a signature "by" Picasso. But of course if the lithograph was actually published in 1979, it must be a fake signature, correct?
The certificate of authenticity on the back is signed by an art gallery, who I have been unable to get in contact with. I have been trying quite desperately to determine its value by perusing art websites online. The one website referenced above is selling the Picasso lithograph for $2900; i paid $15,000 at the auction.
I want to return the art to the auction house and get my money back on the painting, for the reason that I don't believe the Picasso signature is real. I would appreciate some advice as to how to approach the auction house, and whether I should contact the NY authorities.
In addition, I am trying to accumulate as much facts as I can to build my case - could someone please recommend a book, website or other source from which I can obtain facts about this particular Picasso lithograph and thus show that the Certificate of Authenticity is false?
THANK YOU!