The tomb monument's design included figures of the three Virtues in niches, Cossa's family arms, a gilded bronze recumbent effigy laid out above an inscription-bearing sarcophagus supported on corbel brackets, and above it a Madonna and Child in a half-lunette, with a canopy over all. At the time of its completion, the monument was the tallest sculpture in Florence, and one of very few tombs within the Baptistry or the neighboring Duomo. The tomb monument was the first of several collaborations between Donatello and Michelozzo, and the attribution of its various elements to each of them has been debated by art historians, as have the interpretations of its design and iconography.