Brazil, 1918 AD., 1st Republic, Rio de Janeiro mint, 400 Reis, KM 520.

Brazil, 1st Republic (1889 - 1930), Rio de Janeiro mint, 1918 AD.,
400 Réis (ø 30 mm / 11,70 g), copper-nickel, 12,00 g. theor. mint weight, mintage 491.250 , axis coin alignment ↑↓ (180°), plain edge,
Obv.: draped bust of Liberty (or personification of Brazil?) facing right, wearing Phrygian cap, 21 stars around, branches below.
Rev.: REPUBLICA DOS ESTADOS UNIDOS DO BRASIL / 400 / RÉIS / * 1918 * , value within dotted circle, date below.
KM 520 .

Year / Mintage
1918 491.250
1919 891,000
1920 1,521,000
1921 870,750
1922 1,275,000
1923 764,250
1925 2,047,000
1926 1,033,500
1927 738,000
1929 868,500
1930 1,031,000
1931 1,430,500
1932 587,500
1935 225,000

On November 15, 1889 Marshal Deodoro da Fonseca deposed Emperor Dom Pedro II, declared Brazil a republic, and reorganized the government. From 1889 to 1930, the government was a constitutional democracy, but democracy was nominal.
The First Brazilian Republic or República Velha (Portuguese, "Old Republic") is the period of Brazilian history from 1889 to 1930. The República Velha ended with the Brazilian Revolution of 1930 that installed Getúlio Vargas as a dictator.

More on https://en.wikipedia.org/wiki/First_Brazilian_Republic