The art presented on the front page of the book uses one of the most sophisticated metal engravings techniques, in which the drawing is carved directly on the metal plate with incisions made by a pointy steal tool, the burin. It is the oldest chalcography process, and the first works of this kind date back to 1430 in Germany. The technique is still used for paper money and security paper, due to its sophistication and precision. All intaglio works are exclusive, with groups of parallel lines that, depending on their thickness, give the idea of perspective and 3D. This one is a piece by Brazilian João Bosco Renaud, one of the six artists in the world with expertise in this technique. It is an original piece, especially made to celebrate Itaú Unibanco’s 90th anniversary with us.