1 Peso Queen Joanna

Issued as part of Cuba's hard-currency collector series during the Special Period, following the Soviet Union's collapse and the sudden loss of roughly 80% of Cuba's import capacity. The peso convertible system was still years away, and the state mint was producing commemorative issues partly as a foreign exchange mechanism — selling coins abroad that ordinary Cubans would never handle.

Joanna I of Castile, known as "la Loca," governed nominally until 1555 despite being confined at Tordesillas from 1509 onward, never once setting foot in the Americas she technically ruled.