Ghana’s currency after independence
Under Colonial rule, the currency in use in the Gold Coast was the British West African Pound, shillings and pence which was also in use in Nigeria, Sierra Leone and the Gambia.On 6 March 1957, Ghana gained it’s Independence and on 14 July, 1958 ,Dr Nkrumah, the Prime Minister introduced the Ghana Pound, shillings and pence as our new currency to replace the British West African Pound.
So the Ghana Pound, shillings and pence were introduced by Dr Nkrumah on 14 July 1958
On 19 July 1965 President Nkrumah introduced the Cedi notes and Pesewa coins as our new currency to replace the Ghana Pound, shillings and pence that he introduced in 1958.The Minister of Finance who in 1965 worked with President Nkrumah to introduce the Cedi notes and Pesewa coins was Kwesi Amoako Atta.The Governor of Bank of Ghana who worked with them and signed the Cedi notes was our pioneer Ghanaian Governor of Bank of Ghana,William Marmon Quao (WMQ) Halm.

Source: Augustina Quayson