In this sweeping and synthesizing work Professor Omeljan Pritsak charts the influence of Western European. Arabic, Khazaro-Bulgarian, and, later, Byzantine metrological and numismatic systems on the development of these systems in Kyivan Rus'. Beginning with a survey of the weights and monetary systems extant in Eurasia in the 7th to 11th centuries, Pritsak goes on to solve many of the fundamental problems that have existed for over a century in the study of Old Rus' metrology and numismatics.