Posted by Kevin
I was checking the paper of a Picasso Lithograph for the correct age with an UV Light and I accidentally turned it over and there is writing which shows up only in the UV light all over the back of it. It is pencil signed Picasso and it's not English. There are also designs or something along the edges invisible to the naked eye. Completely. Has anyone ever heard or seen a Lithograph by Picasso with invisible ink on the back? Any info would be appreciated.