24. Portrait of a cardinal (?Niccolò Albergati), by Jan van Eyck. c. 1435. Silverpoint on paper, 21.2 by 18 cm. (Kupferstich-Kabinett, Staatliche Kunstsammlungen, Dresden).
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25. Portrait of a cardinal (?Niccolò Albergati), by Jan van Eyck. c.1438. Panel, 34.1 by 27.3 cm. (Kunsthistorisches Museum, Vienna).
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26. Ultra-violet photograph of the inscription on the left-hand side of Fig.24. (Photograph: A. L. Dierick).
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27. Prick marks (magnification of 40) on the earlobe in Fig. 24. (Photograph: Herbert Boswank).
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28. Superimposition of Figs.24 (red) and 25 (blue). (Illustration: Bernhard Illerhaus).
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29. Superimposition of Fig.24 (red) and the underdrawing of Fig. 25 (green). (Illustration: Bernhard Illerhaus).