Flag of the Second Empire of Brazil, with 20 stars, representing the new provincies of Rio Negro (1850, later Amazonas) and Paraná (1853), furthermore the loss of the province of Cisplatina (1828). Reformed standard according to this book, an official publication of the government of Brazil, on page 74.
Empire of Brazil / Império do Brasil File:Facade of Museu Historico Nacional - Downtown Rio de Janeiro - Brazil (17530931716).jpg
Almanaque Lusofonista based in [1] and [2]