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. The denomination is thus shown with a language-neutral abbreviation on the reverse: 10 FR.
Initially when federal Swiss coinage was introduced in 1850, all "francs" (from five francs down to a half franc) were full-bodied silver, while the centimes were either billon (low-grade silver) or base metal. In 1883, a 20 francs gold coin was introduced, with a design like the 5 francs coin at the time. It contained 6.45 g gold at 90% purity, conforming with the standard of the Latin Monetary Union. In 1895, the Federal Council decided that the coin should be made with a novel design. A depiction of Helvetia by Neuchâtel artist Fritz Ulysse Landry (1842 - 1927) was selected, which shows a female head with tresses in profile, with a garland of edelweiss and an alpine panorama in the background. The design was widely popular and given the endearing nickname of Vreneli.
A 10 francs version of the Vreneli was produced from 1911 to 1922, with a total issue of 2.6 million. The first series of banknotes, issued 1907, included no 10 or 20 francs denomination. The gold coins existed in circulation alongside the corresponding banknotes during 1911 - 1936. With the devaluation of 1936, the intrinsic value of the gold coins rose above their face value; however, they have never been formally demonetised, even though they were effectively withdrawn from circulation after 27 September 1936.
Within a beaded border, the reverse has the Swiss Cross on top as a radiate Sun (with rays of light going out from it in all directions).
Below, divided by the rays, the value and denomination 10 FR, below which centrally the date 1915.
Under a decoration in the form of a sprig of alpine flowers, the mint mark B of the Federal Mint of Switzerland (ex Bern Mint, now known as Swissmint).