Crown of Castile Cuartillo

The Cuartillo, a humble copper coin, was one of the first to feature the conjoined arms of Castile and Leon, marking the political marriage of Ferdinand and Isabella.

This small denomination, weighing around 1.5 grams, circulated for everyday transactions in a Spain still reeling from the Reconquista. Minted in places like Seville, it helped standardize currency across the newly unified realms. We don't know the exact mintage figures; records from that era are spotty at best.

Design-wise, it bore a simple cross on the obverse and the monarchs' initials on the reverse. No grand legends, just the basics to get the job done. Sometimes, planchets were recycled from worn billon coins, a practical nod to frugality.

Plan to handle one? Expect patina from centuries of use. As for myths about hidden treasures, I've seen enough to say they're mostly wishful thinking.