Cuartillo - Enrique IV Cuenca

Enrique IV's billon coinage is among the most chaotic of any Castilian monarch. His reign saw rampant debasement — the crown repeatedly reduced the fineness of vellón issues to fund military campaigns and an increasingly fractious court, to the point that counterfeit and privately struck pieces circulated alongside official mint output almost indistinguishably. The Cuenca mint was one of several operating under royal license during this period, but oversight was inconsistent at best.

AB#744 is known with significant variation in fabric and fineness across surviving examples, a direct consequence of that institutional disorder.