The Twenty 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 coins are non-circulating legal tender made for collectors. They are issued in topical series, celebrating various aspects of Swiss heritage or nature.
The edge is usually 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 the 200th anniversary of the birth of Jeremias Gotthelf.
Albert Bitzius (1797 - 1854) was a Swiss novelist, best known by his pen name of Jeremias Gotthelf.
His first work, the Der Bauernspiegel, oder die Lebensgeschichte des Jeremias Gotthelf, appeared in 1837. It purported to be the life of Jeremias Gotthelf, narrated by himself, and this name was later adopted by the author as his pen name. It sketches the development of a poor country orphan boy, but is not an autobiography. It is a living picture of Bernese (or, strictly speaking, Emmental) village life, true to nature, and not attempting to gloss over its defects and failings. It is written (like the rest of his works) in German, but contains expressions from the Bernese dialect of the Emmental.
His best known work is without doubt the short novel The Black Spider (Die schwarze Spinne), a semi-allegorical tale of the plague in form of the titular monster that devastates a Swiss valley community; first as a result of a pact with the devil born out of need and a second time due to the moral decay that releases the monster from its prison again. | 
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