Abbasid Khalifs, Abbasidische Kalifen, Dirham 749-944, EF

In the course of the 9th century the Vikings arrived in the realms in the area of the Abbasid Caliphat, where they traded slaves with the muslims. The Islamic coins of the Abbasids, which were paid for the slaves, were a popular currency among the men of the north , and as so-called "slave money" came to Scandinavia and even as far as Russia and Great Britain.