Duquesne can punch & bottle opener slight rust

This is an advertising item for Duquesne Beer, brewed in the famous South Side of Pittsburgh, Pennsylvania. Once one of the top ten breweries in the USA. This opener is probably from 1950’s to 1960’s. In 1972 the brewery was closed for a period of years. Very collectible for Duquesne, South Side, Pittsburgh, beer & barware.