Madonna of Nicolas van Maelbeke

The drawings are perfunctory copies of the type routinely carried out by workshop assistants, who were presumably recording the design for later full oil panels.

In the 18th century copy, the virgin stands in a cathedral with a vaulted ceiling dressed in a scarlet mantle.

He wears a richly embroidered green cope and holds a book of hours in his right hand and a scepter in his left.

The wing panels contain scenes related to the Immaculate Conception, including representations of the burning bush, Gideon, Ezekiel and Aaron's rod.

When closed, the 18th century copy's exterior wings show a grisaille depiction of the vision of Ara Coeli.