Norwegian-road-sign-727.3R used on country borders. Bilingual Bokmål and Sami in Troms og Finnmark, bilingual Bokmål and Nynorsk in other counties.[1]
https://www.vegvesen.no/_attachment/69066/binary/964085?fast_title=Håndbok+N300+Trafikkskilt%2C+del+4B+Vegvisning%3B+Detaljert+utforming+%2822+MB%29.pdf
Norwegian Public Roads Administration