Fig. 10From: Colour identification, degradation processes and findings in a fifteenth-century Book of Hours: the case study of Cofre n.º 31 from Mafra National Palacea Grey tones from King David’s beard (f.73r) with white, blue and brown pigments visible in the magnified image upper-left (×63); b µ-EDXRF spectrum showing Pb and Cu, indicating lead white and azurite (but not conclusively) respectively (analysed point in the upper-left)Back to article page