It is dateable by the stage of progress reached in the construction of the new tower of Antwerp Cathedral in the background, a typical exhibition of civic pride.
The work loosely repeats the composition of an earlier triptych, now in Vienna (the St John Altarpiece), by Hans Memling, with the addition of the lute-playing angel.
Connecting the three scenes of the inner view are not only the floor tiles, blue sky and continuous landscape but also the repetition of the architectural arch motif and the balustrade with tracery at the top of the image.
Although the design is continuous, the characters depicted on the inner left and right-hand panels are not quite in the same picture space as the central group, though they share the architectural setting.
When the triptych panels are opened images immediately recognizable to anyone viewing this in the 16th century showing the enthroned Virgin Mary accompanied with the Christ child and two angels.