This 1973 Portugal 10 escudos is a rare and valuable coin. It was issued during the Portuguese Estado Novo regime, which lasted from 1933 to 1974. The Estado Novo was a right-wing authoritarian regime that was led by António de Oliveira Salazar. Salazar's regime was characterized by its suppression of dissent and its strict control over the economy and society.

The 1973 Portugal 10 escudos is a beautiful coin with a classic design. It features the coat of arms of Portugal on the obverse and a portrait of Salazar on the reverse. The coin is in excellent condition and has a nice patina.

**Historical events in 1973:**

* The Portuguese Estado Novo regime begins to collapse, with a series of strikes and demonstrations against the regime.
* The Portuguese Armed Forces Movement (MFA) is formed, and it begins to plan a coup against the regime.
* The Vietnam War continues, with the United States and North Vietnam signing a ceasefire agreement in January.
* The Watergate scandal deepens, with President Richard Nixon resigning from office in August.
* The Yom Kippur War begins, with Israel and its Arab neighbors fighting a bloody conflict.