The Renaissance master Raphael (1483-1520) painted the Colonna altarpiece circa 1504-05 for a convent in Perugia. It was subsequently owned by Queen Christina of Sweden, the duc d'Orl ans of France, and the Colonna family in Rome. In 1901, J. Pierpont Morgan acquired the altarpiece, which was still in a private collection, paying the phenomenal sum of two million francs. Morgan's son bequeathed the painting to the Metropolitan Museum in 1916, and...