Sub-Roman Britain, Kings of Dumnonia, cast Potin, c. 420-60, diademed and bearded head left, cross (?) in front, rev. standing figure holding curved staff in right hand and uncertain object in left, chamfered rim, 7.64g/4h (cf. Mitchener, Jetons, Medalets and Tokens I, p.71, 83-4). Good very fine, extremely rare £200-250

Dumnonia is the Latinised name for the Brythonic kingdom in sub-Roman Britain between the late 4th and late 8th centuries, in what is now the more westerly parts of south-west England. It was centred in what is now Devon, but included modern Cornwall and part of Somerset, with its eastern boundary changing over time as the gradual westward expansion of the neighbouring Anglo-Saxon kingdom of Wessex encroached on its territory