This is a silver penny of Queen Cynethryth, wife of Offa. Such coins are very rare finds and even more rarely do they come in good condition. This coin would have been made by hammering a flan of silver between 2 metal dies.
Several photographs of the remains of the earthworks/defences commonly termed Offa's Dyke. These were taken south of Selattyn, just north of the B4580 near Oswestry. Asser mentions a dyke that ran from 'sea to sea' at the time of Offa, but modertn…