Figure 18

Flémalle group, Mérode Triptych, c. 1425, oil and overpainted glazed metal foil on oak, overall: 64.5 x 117.8 cm. The Metropolitan Museum of Art, New York (photograph: © The Metropolitan Museum of Art / Art Resource, NY). There is no gilding, and the original glazed metal foil through the windows has been overpainted with blue sky.

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