 Portraits were introduced at an early stage, and were executed in a number of different styles betraying a range of artistic influences drawing on contemporary and Roman sources.Reverse designs included intricate crosses of various types, but the range of Offa's die-cutters encompassed other reverse designs including intertwining serpents, eels and the wolf and twins.Uniquely in Anglo-Saxon England, coins were also struck at Canterbury in the name of the queen, Cynethryth, from dies produced by the same talented individual responsible for the best of Offa's portrait dies.