 The largest of these new types even encompassed the normally distinct East Anglian mint.Rochester became far more productive under Ceolwulf, perhaps to compensate for lower royal production at Canterbury.It looks like the greater part of Canterbury's coinage from the years c. 822–24 consists of 'anonymous' pennies bearing a royal- or archiepiscopal-style portrait surrounded by the moneyer's name and the mint name ("Dorobernia civitas") on the reverse.