Good rare stamp.

In 1809, to secure its political bond with Puerto Rico and in the midst of the European Peninsular War, the Supreme Central Junta based in Cádiz recognized Puerto Rico as an overseas province of Spain. This gave the island residents the right to elect representatives to the recently convened Spanish parliament (Cádiz Cortes), with equal representation to mainland Iberian, Mediterranean (Balearic Islands) and Atlantic maritime Spanish provinces (Canary Islands)