Otto Demus
The Mosaics of San Marco in Venice: The Eleventh and Twelfth Centuries/The Thirteenth Century.
The University of Chicago Press, 1984. First printings. 0226142892 xiv/495 pages/x/357 pages.
Two volumes in a four-volume set, part 2 of volumes 1 and 2 contains plates. Each volume, measuring approximately 9.5" x 12.5", is bound in navy blue cloth, with stamped gilt lettering to spine. Books are like new. Slipcase, covered in navy blue cloth and color illustrated paper, shows very light shelfwear.
Landmark scholarly work by Austrian art historian and Byzantinist Otto Demus (1902-1990), providing a narrative of a monumental project whose goal it was to restore and document the mosaics of St Mark's Basilica. 
Please note this a very heavy set and may require additional postage.