 Although Northumbria and East Anglia were the main bastions of Viking coinage, at various times there was also production in the East Midlands, for instance of coins naming Saint Martin at Lincoln.The coinage of Edward the Elder in some ways continued the types and organisation current under his father Alfred in Wessex and English Mercia, but with the expansion of West Saxon control into the Midlands and East Anglia the currency system became more complex as new regions were incorporated into Edward's kingdom.For the most part the coinage was non-portrait and simple in design, though some mints in English Mercia struck an interesting series of pictorial reverse types.