Grierson, Philip, and Mark Blackburn. MEDIEVAL EUROPEAN COINAGE - WITH A CATALOGUE OF THE COINS IN THE FITZWILLIAM MUSEUM, CAMBRIDGE. 1: THE EARLY MIDDLE AGES (5TH–10TH CENTURIES). Cambridge: Cambridge University Press, 1991 reprint. Original light blue cloth, gilt; jacket. Light wear on jacket, otherwise fine. An important reference work. Very fine condition.