 Some issues are so large that only major rulers could have been behind them, whilst others are so small that they could well have been the work of an individual moneyer working independently.Others display prominent and sophisticated religious motifs, suggesting that they may have been produced by monasteries or bishops.An exception to the general obscurity of the "sceattas" comes in Northumbria, where from a very early date the king and (arch)bishop of York played a strong role in coinage production