 The imagery employed, however, does not follow that on Irene's coinage, but that used on coins of late Roman empresses, just as the image used on Offa's coins show him as a late Roman emperor.It has been suggested that the coins were minted for donations by Cynethryth to the Church, but their similarity to the general issues suggests otherwise.This coinage is unique in Anglo-Saxon England, and indeed in Western Europe in this period.