The currency replaced by the escudo in 1911 was denominated in
Portuguese reals (plural: ) and worth 1,000 . The was equivalent to 2.0539 grams fine gold from 1688 to 1800, and 1.62585 g from 1854 to 1891. Gold worth 1.6 (or 1.600; not to be confused with the 20th-century currency) were issued from 1722 to 1800 in denominations of , 1, 2, 4 and 8 . The escudo (gold) was again introduced on 22 May 1911, after the
1910 Republican revolution, to replace the
real at the rate of 1,000 to 1 . The term (thousand ) remained a colloquial synonym of up to the 1990s. One million was called one , or simply one . This expression passed on to the escudo, meaning one thousand escudos. The escudo's value was initially set at 675 = 1 kg of gold. After 1914, the value of the escudo fell, being fixed in 1928 at 108.25 to £1
sterling. This was altered to 110 to £1 stg in 1931. A new rate of 27.50 escudos to the
U.S. dollar was established in 1940, changing to 25 in 1940 and 28.75 in 1949. During
World War II, escudos were heavily sought after by Nazi Germany, through Swiss banks, as foreign currency to make purchases to Portugal and other neutral nations.
Inflation throughout the 20th century made centavos essentially worthless by its end, with fractional value coins with values such as 50 centavos and eventually withdrawn from circulation in the 1990s. With the entry of Portugal in the
Eurozone, the conversion rate to the
euro was set at 200.482 = €1. ==Territorial usage==