This rate was officially accepted by the British government in a treaty titled "Agreement between His Britannic Majesty's Government and the Administration of the Faroe Islands, for Regulating the Financial Relations between the United Kingdom and the Faroe Islands," which came into force on 27 March 1941.
Suurbritannia valitsus kinnitas selle vahetuskursi ametlikult lepinguga "Suurbritannia majesteedi valitsuse ja Fääri saarte administratsiooni vaheline leping Ühendkuningriigi ja Fääri saarte vaheliste finantssuhete reguleerimiseks", mis jõustus 1941. aasta 27. märtsil.