http://www.myfonts.com/fonts/abc-litera/abc-allegra/

Allegra by Jost Hochuli is a sans-serif mo­noline with classical proportions, in seven weights, roman and italic. It was designed principally for book typography. As the counters are open, Allegra is also suited for signage and lettering. All fonts are provided with sufficient accents to be usable for virtually all scripts based on the Latin alphabet.