"A Rappen (pl. Rappen) originally was a variant of the medieval Pfennig ("penny") common to the Alemannic German regions Alsace, Sundgau and northern Switzerland. As with ...
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other German pennies, its half-piece was a Haller, the smallest piece which was struck.
Today, one-hundredth of a Swiss franc is still officially called a Rappen in German and Swiss German and rap in Romansh. In French-speaking Switzerland, the modern Swiss coins are called centime (pl. centimes) and in Italian-speaking Switzerland, centesimo (pl. centesimi), respectively. centime(s) is also used internationally or in other languages than the Swiss national languages." - (en.wikipedia.org 30.09.2019)