Restorers work on one of Michelangelo's Pieta sculpture in Florence, Italy, Tuesday, Sept. 8, 2020. A restoration of one of Michelangelo’s Pieta sculptures has uncovered previously unknown details, including the artist’s tool marks, that had been hidden under centuries of dust and wax. Florence’s Museo dell’Opera del Duomo said Wednesday, Sept. 16, 2020 that the cleaning of the Bandini Pieta, which began last year but was suspended because of the coronavirus pandemic, had resumed and that the public was now invited to watch restorers at work. Michelangelo carved the Bandini Pieta between 1547-1555, when he was nearly 80. (Claudio Giovannini/Opera di Santa Maria del Fiore via AP)