Denier of Charles the Bald

Charles the Bald's denier was one of the first coins to enforce a uniform weight standard across his splintering empire, weighing in at around 1.5 grams of silver to curb the rampant debasement of earlier issues.

That standardization didn't come easy. Minted in places like Paris and Rheims between 840 and 877, these coins bore a simple cross on one side and the king's monogram on the other, reflecting the Carolingian push for central authority. We know the designs varied slightly by mint, but exact production figures? Those went up in smoke with medieval records.

Some say these deniers funded Charles's endless wars, but that's likely exaggerated. What we do know is that they influenced European currency for centuries, paving the way for the later French livre.

Imitations were common, which numismatists like me find amusingly predictable.