![]() The pigments and other materials, such as gold and silver, are in consonance with the materials used in the 15th century. For colour analysis, it was used colorimetry on different areas of the folios, showing considerable differences between the most and least handled areas due to th e deposit of dirt and grime. In an overall analysis, 78% of folios were slightly damaged and 17% damaged. In a set of selected folios, the main damage signs were observed: surface contamination, deformation and discoloration of the parchment, damages in the illuminations and text. As an aid tool for the diagnostic of its conservation state, it was used the IDAP protocol (Improved Damage Assessment of Parchment). ![]() This prayer book, composed by illuminations and devotional texts, is in a bad condition due mainly to the rebinding done between 18th - 19th centuries. The “Cofre no.31” is a French 15th century book of hours from the Palácio Nacional de Mafra (PNM), in Portugal. ![]()
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