Flag of the first Empire of Brazil, with 19 stars.It gained 20 stars only in 1853, after the creation of the Paraná province.). 
 <a rel="nofollow" class="external text" href="http://www.biblioteca.presidencia.gov.br/publicacoes-oficiais/catalogo/itamar/os-simbolos-nacionais-1993-color">Vexillology and heradic in the molds of this book, an official publication of the government of Brazil, on page 74 and others.</a> The shield conforms to the one at the base of the Crown of Pedro I of Brazil in 1822 which is the continental format also referred to as neoclassical: <a href="//commons.wikimedia.org/wiki/File:Coroa_Pedro_I_01.png" class="image"><img alt="Coroa Pedro I 01.png" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Coroa_Pedro_I_01.png/57px-Coroa_Pedro_I_01.png" decoding="async" width="57" height="33" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Coroa_Pedro_I_01.png/86px-Coroa_Pedro_I_01.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Coroa_Pedro_I_01.png/114px-Coroa_Pedro_I_01.png 2x" data-file-width="1274" data-file-height="740"></a>.
Governo do Império do Brasil/Jean Baptist-Debret
1822
Governo do Império do Brasil