 Both of Bernini's early biographers, Domenico Bernini and Filippo Baldinucci, recount the history of the busts and explain the creation of the second version.After Bernini had completed the first version, the ‘allustratori’ were polishing the bust when they discovered a significant fracture in the marble across the forehead, disfiguring the face.Bernini was notified and immediately set to work to create a second version with a new block of marble, which took three days according to Domenico Bernini, and fifteen to Baldinucci.