The Islamic coins found in this treasure were Abbasid, it is well known fact, the Islamic silver dirhams were the main curreny worldwide in the 9th and 10th century, the vikings loved the muslim silver.
No, you state above 'it is well known fact, the
Islamic silver dirhams were the main curreny worldwide'.
A 'currency' is a group of coins (or other monetary items) which are the sole means of purchasing goods in a particular country: your statement implies that Abbasid coins were used in everyday transactions 'worldwide', which is totally incorrect.
Dirhems were widely accepted in the areas outside the Abbasid empire where they were available as pieces of
good silver bullion, but the only
area where they can be called 'currency' is within the Abbasid empire.
The overwhelming majority of the coins in the
hoard are English pennies, which were the 'currency' of
England at the time (c.927 AD) when they were buried.
There are scattered finds of single or small numbers of
Islamic coins all over Europe, but they were never widely used even as bullion anywhere but Scandinavia. Small numbers of
Spanish Umayyad coins are sometimes found in southern
France for instance, but the vast majority which crossed into
France would have been quickly melted down and converted into the local 'currency', deniers.
Best wishes
Alan
