Compare two madonnas

KU Leuven. Glass slides art history. Université de Louvain, between 1839 and 1939. Photographer unknown. Added information on slide. Style: Flemish Primitives. Creation/Building: c. 1430-1435 (1). Creation/Building: c. 1425-1430 (2). Technique/Material: Oil on panel. Current location: España, Madrid, Museo del Prado (1). Current location: Deutschland, Fränkfurt, Städelsches Kunstinstitut (2). Euro…