Alfonso IX came to the Leonese throne in 1188 under immediate dynastic pressure — his father Fernando II had barely died before Castile and Portugal moved to exploit the succession. The dineros struck in his early reign were minted against a backdrop of near-constant military campaigning and shifting alliances, including Alfonso's excommunication by Pope Clement III for marrying a close relative. Royal coinage served as a direct instrument of political assertion when the kingdom's borders were anything but settled.
The billon content places this squarely in the broader Iberian debasement trend of the late 12th century, when silver-poor peninsular mints routinely struck at fractions well below northern European standards.
Alfonso IX came to the Leonese throne in 1188 under immediate dynastic pressure — his father Fernando II had barely died before Castile and Portugal moved to exploit the succession. The dineros struck in his early reign were minted against a backdrop of near-constant military campaigning and shifting alliances, including Alfonso's excommunication by Pope Clement III for marrying a close relative. Royal coinage served as a direct instrument of political assertion when the kingdom's borders were anything but settled.
The billon content places this squarely in the broader Iberian debasement trend of the late 12th century, when silver-poor peninsular mints routinely struck at fractions well below northern European standards.