A-The Virgin; Circular Medallion in Porphyry. Diameter, 17 cm. Byzantine, 1078-1081. (Victoria and Albert Museum). Shorter Notices: A Byzantine Porphyry Disc for South Kensington
Western art unattributed:
B-Engraving of the Porphyry Relief Shown above, Published by Chiflet in 1661. Shorter Notices: A Byzantine Porphyry Disc for South Kensington
Western art unattributed:
C-The Emperor Nicephorvs Botaniates and the Empress Maria. From the Homilies of St. John Chrysostom. (Bibliothèque Nationale, Paris). Shorter Notices: A Byzantine Porphyry Disc for South Kensington