This is a preparatory drawing for a fresco in the basilica of Sant?Andrea in Mantua. Prior to the discovery of this drawing the attribution of the fresco was unknown, but it has now been firmly ascribed to Brusasorci, together with the scene of the `Birth of the Virgin? on the opposite wall. The high degree of finish suggests that this drawing may have served as the model (`modello?) or final design to be shown to a patron for approval before being squared for enlargement.