Balog, Paul, The Coinage of the Ayyubids, Royal Numismatic Society, Hertford, 1980, 334 pages, 50 plates, hardcover. The book covers the medieval Islamic coinage of Saladin and his successors in the Fertile Crescent and Arabia: Egypt, Syria, Mesopotamia and Yemen. Includes an index of years and mints. The definitive work on Ayyubid coinage, plus Paul Balog's The Coinage of the Ayyubids: Additions and Corrections by Norman D. Nicol, from the The Numismatic Chronicle Vol. 146 (1986), pp. 119-154.
Estimate: 30-50 USD