Miniature Altarpiece: Anna Selbdritt

A round relief of the Virgin and Child with St Anne. Below them are figures of a male and female donor at prayer desks, the man presented by St James the Greater, and the woman by St Michael. The relief is mounted in a silver miniature altar in the form of a triptych, with hinged semi-circular wings. The console is pierced with a quatrefoil diaper. The wings are decorated with foliate designs. The top has an escutcheon with the head of a cherub, topped by a figure of God the Father.

-from V&A site

NB Romanelli identifies the saints as Andrew and George, but the saint beside the woman definitely has wings, and the hat and staff of the other saint are attributes associated with James, not Andrew