Before and after that, Chile used Pesos.

https://en.wikipedia.org/wiki/Chilean_peso

In 1975, the new Peso was valued at 1000 Escudos.

Quick Answer
Upon its introduction in 1975, the Chilean peso was valued at 1,000 escudos, the official Chilean currency it replaced. From 1975 to 1999, the Central Bank of Chile managed the exchange rate through a variety of means, including crawling bands, fixed rates and other mechanisms. In September 1999, the bank shifted to a floating value, which allows the market to determine the value of the peso, as is the case with the U.S. dollar and other major currencies.

I don't know much about Economics, but think that Crawling Bands have something to do with Wandering Mariachis. "Other Mechanisms" may refer to 30 years in jail courtesy of Gen. Pinochet.

A wild guess, 1000 Escudos, which existed as a banknote but not a coin, would have been maybe $10 US?