Perugino was made one of the priors of Perugia in 1501. On one occasion Michelangelo told Perugino to his face that he was a bungler in art ("goffo nell arte"): Vannucci brought an action for defamation of character, unsuccessfully. Put on his mettle by this mortifying transaction, he produced the masterpiece of the "Madonna and Saints" for the Certosa of Pavia, now disassembled and scattered among museums: the only portion in the Certosa is "God the Father with cherubim". An "Annunciation" has disappeared; three panels, "the Virgin adoring the infant Christ, St. Michael and St. Raphael with Tobias" are among the treasures of the National Gallery, London. This was succeeded in 1504–1507 by the Annunziata Altarpiece for the high altar of the Basilica dell'Annunziata in Florence, in which he replaced Filippino Lippi. The work was a failure, being accused of lack of innovation. Perugino lost his students; and towards 1506 he once more and finally abandoned Florence, going to Perugia, and thence in a year or two to Rome.