Naira gains N9.22 against dollar at official window The Nigerian currency, the naira, recovered against the United States dollar at the official window on Wednesday. At the official window, the Central Bank of Nigeria (CBN) foreign exchange data showed that the naira closed at N1,357.33/$1, compared to N1,366.55/$1 on Tuesday. This represents a gain of N9.22 for the local currency against the dollar.