The Ten Francs coin is a denomination of the Swiss Franc. Given that Switzerland has four official languages, the Franc has three different names: Franken in German, franc in French and Romansh, and franco in Italian. Initially when federal Swiss coinage was introduced in 1850, all "francs" (including the half franc) were full-bodied silver, while the centimes were either billon (low-grade silver) or base metal.
The normal circulating 5 FR denomination was supplemented by circulating commemorative one-year type 5 Franc coins in silver and copper-nickel.
In 1999, Swissimint changed the concept and started striking non-circulating commemoratives for collectors only, which were bimetallic 5 Francs at first. After only six coins were issued in the first five years, this format was discontinued. Further non-circulating bimetallic coins are now denominated as 10 Francs, such as those listed below.
The 10 Francs are bimetallic and have the same dimensions as the bimetallic 5 Francs, but their colours are reversed: with an Aluminium Bronze outer ring (92% copper, 6% Aluminium, 2% Nickel) and a copper-nickel inner circle (75% copper, 25% nickel). They are issued in topical series, celebrating various aspects of Swiss heritage or nature.
The 2010 Ten Francs collector coin shows an Alpine Marmot (German: Murmeltier; French: Marmotte; Italian: Marmota). It is part of a series about animals in the Swiss National Park (German: Schweizerischer Nationalpark; French: Parc National Suisse).
The obverse of the coin is common with the other commemorative 10 Francs and is designed by Roland Hirter; the reverse is designed by Niklaus Heeb.
The Swiss National Park is located in the Western Rhaetian Alps, in eastern Switzerland. It is within the canton of Graubünden, between Zernez, S-chanf, Scuol, and the Fuorn Pass in the Engadin valley on the border with Italy. It is part of the worldwide UNESCO Biosphere Reserve.
The alpine marmot (Marmota marmota) is a large ground-dwelling squirrel, from the genus of marmots. It is found in high numbers in mountainous areas of central and southern Europe, at heights between 800 and 3,200 m in the Alps, Carpathians, Tatras and Northern Apennines.
Bimetallic 10 Franc coins are legal tender but are issued in small quantities for collectors only and do not circulate. | 
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