1 Denier - Ferdinand II bridge

Ferdinand II struck these deniers in the years following his consolidation of the Leonese throne, a period when he was actively rebuilding towns and infrastructure along the Duero frontier as a buffer against Almohad incursion. The "bridge" designation in the catalog tradition refers not to a design element but to a typological classification linking this emission to a transitional phase in Leonese billon coinage between earlier Navarrese-influenced types and the distinctly Leonese series that followed.

Billon quality in Leonese mints during this decade was inconsistently enforced, and surviving examples vary noticeably in silver content.