Valrhona Ivoire, white couverture, callets, 35% cocoa butter, 250 g, bag
Séraphin-Médéric Mieusement, Musée de Cluny. Couverture de livre en ivoire, X.e siècle, albumin paper, black and white positive process, image size: height: 25.8 cm; width: 18.4 cm, dry stamp: recto u. li.: