SCIENTIFIC PIGMENT GUARANTEES
Dr. Marianne Tauber of the SIK of Zurich (Schweizerisches Institut für Kunstwissenschaft) Swiss Institute for Art Research, as well as having detected in the underlayer of "Dama en Edén Concert" pigments identical to those of 59 other paintings by Picasso of his Blue Period, has also detected a "layer of green earth" (gruene Erde/Glaukonit) not belonging to Picasso. This proves that "Dama en Edén Concert" was also repainted by Picasso over a previously painted canvas, and after having sketched his father (José Ruiz Blasco) whilst reading.