This altarpiece comes from a chapel in the Certosa di Pavia, a Carthusian monastery near Milan. The central Virgin & Child are flanked by the Archangel Saint Michael on the left, standing on Satan. Raphael & the young Tobias are on the right. The Virgin's robe is ultramarine of exceptional quality. The church was consecrated in May 1497. In 1499 Ludovico il Moro, ruler of Milan & the Certosa's most important supporter, applied pressure to get it completed. The Certosa had a large number of chapels. The original altarpiece had an upper tier with God the Father flanked by the Virgin Annunciate & the Archangel Gabriel. The two top side-panels were supplied by another Florentine artist, Albertinelli, after Perugino had failed to paint them. Originally these three panels formed the lower tier of a six-panel altarpiece. They have been cut down at the bottom. Central panel 113.7 x 63.8 cm; wings each approx. 113 x 56 cm.