The pound was the currency of Nigeria between 1907 and 1973. Until 1958, Nigeria used the British West African pound, after which it issued its own currency. The pound was subdivided into 20 shillings, each of 12 pence. The Nigerian pound (which was at parity with the British pound with easy convertibility) was replaced with the introduction in 1973 of the decimal naira at a rate of 1 pound = 2 naira. This made Nigeria the last country to abandon the £sd currency system.