 Scholars have not established if the panel was meant to be a single devotional work , or part of a larger , and now broken up , polyptych . According to Ainsworth , its size and " the sacramental nature of its subject would have been appropriate for a family chapel in a church or monastery for the chapel of a guild corporation . " An intact , inscribed frame is unusual for a wing panel , indicating that it was probably intended as a single piece , but scholars are unsure because the slight left @-@ to @-@ right axis of the tiles tend to suggest it could have been the left @-@ hand wing of a larger piece . There is no information about the panel 's reverse , which has not survived . 
