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 2006 Ten Francs collector coin shows the mountain of Piz Bernina. It is part of a series about Swiss mountains (German: Schweizer Berge; French: Montagnes suisses).
The obverse of the coin is common with the other commemorative 10 Francs and is designed by Roland Hirter; the reverse is designed by Stephan Bundi.
Piz Bernina or Pizzo Bernina is the highest mountain in the Eastern Alps, the highest point of the Bernina Range, and the highest peak in the Rhaetian Alps. It rises 4,048.6 m and is located south of Pontresina and near the major Alpine resort of St. Moritz, in the Engadin valley with the massif partially in Italy.
Bimetallic 10 Franc coins are legal tender but are issued in small quantities for collectors only and do not circulate. | 
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