It has been tentatively attributed by the Met to Jean de Toul, a French goldsmith about whom little is known, but who is associated with a small number of works with similar stylistic characteristics.
[5] The central panel shows the Virgin and Child surrounded by angels, placed in an elaborate Gothic architectural shrine.
The arches and vaults are described in gilded silver, the wing panels are in enamel and in their colourisation, figuration and perspective, seem intended to evoke stained-glass windows.
Each of the two outer wings contains three foldable panels, showing scenes from the Life of the Virgin and Christ Child.
[6] The setting contains a number of elements reflective of contemporary Gothic architectural design,[3] including ribbed vaults, buttress with figures of saints, and trefoil arches.