1/2 Ducat - Ferdinandus V and Elisabet I

This issue dates to the 1497 Ordinance of Medina del Campo, the same sweeping monetary reform that established the Excelente as Spain's prestige gold coinage and standardized fineness across the Castilian mints. The half ducat was struck at multiple mints simultaneously — Burgos, Seville, Toledo, and Granada among them — which accounts for the range of Calicó references assigned to what is nominally a single type. Mint attribution often hinges on small differences in the assayer's mark rather than any major design variation.