In 1998, a restoration performed by the Opificio delle Pietre Dure showed that for the Virgin's mantle a simpler technique was used, indicating that the work was perhaps completed by one Monaco's pupils after his death.

The central panel depicts the Annunciation in a single painted surface whose rounded top arches recall however the shape of a triptych.

These shows typical elements of the International Gothic style, such as the fine arabesques in the drapes and the delicate tonalities in contrast with the dark backgrounds.

In the Adoration, the detail of the old king kneeling to kiss the Child is taken from a Ghiberti's tile, and was also used by Gentile da Fabriano in his Strozzi Altarpiece.

The Annunciation depicts a sitting Madonna, with an angel arriving from the left to stop her reading (a hint to the Holy Books).