The first surviving work that can be attributed to Lorenzo is a triptych of "St Bartholomew Enthroned, with Scenes from his Life." In 1401 Lorenzo collaborated with his mentor, Gerini, and friend Spinello Aretino on an altarpiece entitled "Coronation of the Virgin" for Saint Felicita in Florence. Lorenzo's addition to this altarpiece was limited to the four saints on the left side of the predella. However, in January 1402 Lorenzo was commissioned to paint his own altarpiece of the "Coronation of the Virgin", a polyptych for the predella of San Marco in Florence. In 1440, Cosimo and Lorenzo de' Medici had this altarpiece removed and replaced with a work by Fra Angelico, and Lorenzo's altarpiece was subsequently moved to San Domenico at Cortona.