Bloomberg: "The Swiss National Bank takes its money seriously. Fresh from winning banknote of the year for its 50-franc denomination, it unveiled a new 20-franc design on Wednesday that Vice President Fritz Zurbruegg argues might be the world’s most secure bill.
Red in colour and based on a theme of light and culture, the new 20, made of cotton paper and an inner polymer core, will come into circulation as of May 17.
"The 20-franc note focuses on Switzerland’s creativity, highlighting the country’s vibrant cultural and artistic scene in a variety of areas."
The new 20-franc note follows the introduction of last year's new 50-franc note, which was named Banknote of 2016 by a group of international connoisseurs, beating 18 competitors including the Bank of England’s controversial polymer note.
Switzerland’s new series feature nature rather than portraits of historical Swiss figures. The new 20 also has 15 security features, including a globe that changes colour, a silver map of Switzerland and across that morphs into the country’s flag.
In response to a question about whether the note might be the world’s most secure, Zurbruegg said with a chuckle: “I’d claim that it is.”
Bosley, Catherine. 2017 "Meet Switzerland’s New 20-Franc Note" Bloomberg Market Web. https://www.bloomberg.com/news/articles/2017-05-10/meet-switzerland-s-new-20-franc-note