1/2 Silver maravedi - Alfonso X Seville

Alfonso X's monetary reform of 1172 — more precisely, his reorganization of the maravedí system — was driven by chronic debasement under his predecessors and the enormous fiscal pressure of his Italian imperial ambitions, the so-called "Fecho del Imperio." The Seville mint, operating under Castilian control since Ferdinand III's reconquest of the city in 1248, was one of the primary production centers for this reformed silver coinage.

The fractional denomination reflects the practical demands of daily commerce in Andalusia, where market activity required small-change silver in quantities the full maravedí could not serve.