Obol - Louis I Nantes

Louis the Pious consolidated Carolingian monetary policy after Charlemagne's death in 814, and the Nantes mint was among the regional centers brought under tighter imperial control during precisely this window. The obol — half a denier — circulated primarily in small transactions and tolls, and surviving examples from provincial Carolingian mints are considerably scarcer than their denier counterparts, partly because the smaller flan was more susceptible to loss and less likely to be hoarded.