The Fifty 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.
In regular circulation, the denomination is served by a banknote. These gold coins are non-circulating legal tender made for collectors and struck in proof grade only. They are issued in topical series, celebrating various aspects of Swiss heritage or nature. Swissmint has issued at least one every year since 2001. Initially, both sides of the coin carried a commemorative design; starting from 2004, the obverse is the same and only the reverse changes. (It is worth mentioning that some sources consider it the other way round, and call the commemorative part the obverse; however, we are going with the standard definition, which is that "obverse" is the side which specifies the issuing authority).
The edge is inscribed with the motto DOMINUS PROVIDEBIT (The Lord will provide - a quote from the Bible, Genesis 22, 8), and thirteen stars representing the original thirteen cantons of the Swiss Federation.
This coin commemorates 500 years of the Pontifical Swiss Guard.
The Pontifical Swiss Guard (also Papal Swiss Guard or simply Swiss Guard; Latin: Pontificia Cohors Helvetica; Italian: Guardia Svizzera Pontificia; German: Päpstliche Schweizergarde; French: Garde suisse pontificale; Romansh: Guardia svizra papala) is a minor armed force and honour guard unit maintained by the Holy See that protects the pope and the Apostolic Palace within the territory of the Vatican City. Established in 1506 under Pope Julius II, the Pontifical Swiss Guard is among the oldest military units in continuous operation.
The dress uniform is of blue, red, orange and yellow with a distinctly Renaissance appearance. The Swiss Guard are equipped with traditional weapons, such as the halberd, as well as with modern firearms. Since the assassination attempt on Pope John Paul II in 1981, a much stronger emphasis has been placed on the Guard's non-ceremonial roles, and has seen enhanced training in unarmed combat and small arms.
Recruits to the guards must be unmarried Swiss Catholic males between 18 and 30 years of age who have completed basic training with the Swiss Armed Forces. The unit's security mission is complemented by the Corps of Gendarmerie of Vatican City.