Maravedi - Enrique IV Jaen

Enrique IV's maravedis from Jaén were struck during one of the most turbulent stretches of Castilian monetary history. Between 1461 and 1471, the kingdom's currency system collapsed under the weight of rampant unofficial minting — nobles, towns, and outright counterfeiters operated presses with near impunity, flooding circulation with debased billon that bore only passing resemblance to royal issues. The Jaén mint was among the authorized crown facilities, but even legitimate output from this period varied wildly in alloy consistency.

The crisis culminated in the 1471 monetary ordinances, which attempted to suppress the worst offenders and reestablish crown control — a reform that came too late to restore confidence before Isabel's accession.