Design for an altar of the St. Lucas Guild in the Cathedral of Our Lady in Antwerp, 1689

Design for a new altar of the St. Lucas Guild in the Cathedral of Our Lady in Antwerp: in the middle is a large oval surface, onto which a painting has to be placed; above that is a parapet with a balustrade, behind and in front of which two angels are hovering. A graduated scale is seen along the bottom edge.