two circular panels, hinged and folded together
Upper: Crucifixion with fainting Virgin; male and female patrons kneeling at left; above, shield of arms; below, lozenge-shaped arms for the female;
lower half: St Jerome in forest praying before crucifix; hat, cloak and lion behind, church in distance; outside: low relief, Marriage of the Virgin, Virgin and Child with St Elizabeth [NB Marks 1977 says it's St. Anne]
source: British Museum website

Polyptych - upper half closed by two doors. On the outside of the doors, the Virgin in the Temple (left), Marriage of the Virgin (right); inside the same doors, Moses and the Brazen Serpent (left) and the Deposition (right). Inside the upper half, in deep and delicate relief, the Crucifixion beneath a vaulted roof, staged on several levels.

Polyptych: Upper hemisphere: Crucifixion; left wing: Brazen serpent; right wing: Descent from the Cross, Entombment; outer wings: left: Presentation of the Virgin, right: Marriage of the Virgin; lower hemisphere: Carrying of the Cross with St. Veronica; Medallion: outer: Annunciation; inner: Nativity, Presentation, Annunciation to Joseph, Flight into Egypt, Christ in the Temple