However, in the second map, a portion of the Cantino planisphere of 1502, the island of Maio is identified as Fogo, although Fogo is west, not east of São Tiago. This map is also preserved in the Estense Library, in Modena, Italy.

     The explanation for the error on the stamp is that the source was incorrect. The mistake is on the original map, a simple error, putting the wrong name on one of the islands.