Romansh language registry in Romansh. The Swiss National Bank first planned to include Romansh on its bills in 1956, when a new series was introduced. Due to disputes within the Lia Rumantscha over whether the bills were to feature the Sursilvan version ""Banca nazionala svizra"" or the Vallader version ""Banca naziunala svizzra"", the bills eventually featured the Italian version twice, alongside French and German. When new bills were again introduced in 1976/77, a Romansh version was added by finding a compromise between the two largest varieties Sursilvan and Vallader, which read ""Banca naziunala svizra"". The numbers on the bills were printed in
Official language to the government in their native languages. In countries that do not formally designate an official language, a "de facto" national language usually evolves. English is the most common official language, with recognized status in 51 countries. Arabic, French, and Spanish are also widely recognized. An official language that is also an indigenous language is called "endoglossic", one that is not indigenous is "exoglossic". An instance is Nigeria which has three endoglossic official languages. By this the country aims to protect the indigenous languages although at the same time recognising the English language as its lingua franca. Around 500 BC,