Abbasid coins have been found in hoards all over Scandinavia, which suggests very active trade routes between the Islamic world and the vikings.

 
                
                
                                Reverse: Margin: محمد رسول الله ارسله بالهدى و دين الحق ليظهره على الدين كله ولو كره المشركون Center: محمد رسول الله صلى الله  عليه و سلم  الخليفة المهدى  يحيى
                            
Die Orientation: 2 H
Weight: 3 g
 
                
                
                                Reverse: Margin: محمد رسول الله ارسله بالهدى و دين الحق ليظهره على الدين كله ولو كره المشركون Center: محمد رسول الله بخ بخ
                            
Die Orientation: 6 H
Weight: 2.83 g
Margin: "In The Name of God. This dirham was struck in Madinat al-Salam in the year five and fifty and one hundred (155)"
Center: There is no diety except |
(the one) God alone |
He has no equal
Translation of reverse:
Margin: Muhammad is the messenger of God. He sent him with guidance and the true religion to reveal it to all religions even if the polytheists abhor it.
Center: Muhammad
The Messanger
Of God
(Bakh Bakh)
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                                Reverse: Margin: محمد رسول الله ارسله بالهدى و دين الحق ليظهره على الدين كله ولو كره المشركون  Center: محمد رسول الله بخ
                            
Die Orientation: 3 H
Weight: 2.85 g
Year 148 AH=765-766 AD
Translations:
Obverse margin: "In The Name of God. This dirham was struck in Madinat-al-Salam in the year eight and forty and one hundred"
Obverse center: "There is no deity except (the one) God, he has no equal"
Reverse margin: "Muhammad is the messenger of God. He sent him with guidance and the true religion to reveal it to all religions even if the polytheists abhor it."
Reverse center: "Muhammad The Messenger Of God (Bakh)"
 
                
                
                                Reverse: Margin: محمد رسول الله ارسله بالهدى و دين الحق ليظهره على الدين كله ولو كره المشركون Center: محمد رسول الله  مما امر به الامير الامين محمد بن امير المؤمنين  جعفر
                            
Die Orientation: 7 H
Weight: 2.96 g
