15th cent.
Pen on white paper; 34x24 cm
Florence, Gabinetto Disegni e Stampe degli Uffizi, 1758 A

This drawing has become a sort of icon of Renaissance perspective. It is attributed to Paolo Uccello or to Piero della Francesca. The subject of the "chalice" was sometimes illustrated in the abacus treatises as an example for calculating volume and was often depicted in late 15th-century marquetry.