50 Riyals

The Qatar and Dubai Currency Board was an unusual arrangement — a single currency authority serving two politically distinct entities that would never formally unify. Dubai joined not out of monetary necessity but because the Gulf rupee, which both territories had been using, was being phased out following India's 1966 devaluation crisis, which hit Gulf traders hard. The Board filled the vacuum until Dubai joined the UAE in 1971 and Qatar went its own way with the Qatar Monetary Agency.

Bradbury Wilkinson printed the series at New Malden under tight security conditions typical of their sovereign contract work. The 50 Riyal was the highest denomination in the initial release, making it the note most likely to have been held rather than spent — genuine circulation examples show corresponding wear patterns concentrated at the folds.