Sorry I can't help coming back to this super find...here is a bit more imfomation.
A shortage of gold throughout Europe led to a gradual debasement of Thrymsas from about the middle of the seventh century resulting in the gold Tremisis eventually developing into the silver penny ("Sceat"). The most popular of these later pale gold coins were copied from a late 4th century solidus with Victory between two enthroned emperors. These were probably struck in Kent between 650 and 660 A.D. It is thought that tremisses (commonly called "thrymsas" in England) were in fact shillings of the Anglo-Saxon law and were used more for the payment of compositions and fines rather than ordinary currency.
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