Lumiere Technolgy, the Paris based art certification company, certifies that the flee-market discovered painting is in fact an original Leornardo da Vinci ! This would be the most important art discovery of the last fifty years. Lumiere Technology compared the painting nick-named "Profile" to the Mona Lisa and the Lady with an Ermine and found the type of paint used to be the same. Combined with Carbone 14 dating the Lumiere Technology analysis appears to confirm that this is a true discovery of great magnitude.
See here for the Lumiere Technology Web Site.