From the 740s until the end of the Northumbrian kingdom, coins were issued by most kings, although in variable quantities. Until recently no coins from Eardwulf's reign were known, which suggested that it may have been a time of instability, or perhaps that the kingdom was impoverished by the payment of tribute to Offa and Coenwulf of Mercia.
From the 740s until the end of the Northumbrian kingdom, coins were issued by most kings, but in varying amounts. The lack of coins from Eardwulf's reign suggests a possible period of instability or financial hardship due to tribute payments to Offa and Coenwulf of Mercia.