Although the map on the
sheet looks modern, it was, in fact, composed in 1776 by Simão Antonio
da Roza Pinheiro of Rio de Janeiro. It exists as a manuscript in the
Museu da Marinha in Rio De Janeiro under the title Carta nautica do
Atlantico. Pinheiro was a pilot in the royal service. He made a
number of maps which have survived. The original contains much more
detail than the souvenir sheet. The only settlement on the sheet is
Castelo Damina in Africa, a trading post established on the Guinea
coast in 1482 by the Portuguese.
souvenir sheet was issued to celebrate the centenary of the founding
of Brazil's Naval Institute of Hydrography and Navigation, which was
established by imperial decree, February 2, 1876.