Oblong carving of boxwood; square with arched top:one face with Mass of St Gregory, with two acolytes officiating before altar, on which stands Christ with instruments of the Passion; two bishops to right, two priests to left; other face with Annunciation and two men counting beads before figure of Virgin and Child, patron saint on each side; part of larger carving.

source: British Museum website

Upper section is triptych with ogee arches, Crucifixion in centre in relief, on vaulted background, numerous figures in foreground;
left wing: Bearing of the Cross with Sacrifice of Isaac in distance;
right: Resurrection, with Entombment and other scenes in background;
second stage is smaller triptych carved in low relief with Agony in the Garden and, on the leaves, the Betrayal

rests on semi-circular arcade with Last Supper in full relief; each side with seated lion grasping a shield