1 Penny - George VI

British West Africa was not a single colony but a administrative grouping covering Nigeria, Gold Coast, Sierra Leone, and the Gambia, with coinage struck centrally through the West African Currency Board — established in 1912 specifically to replace the chaotic mix of local currencies and imported silver then circulating across the region. The copper-nickel alloy used for this issue was a wartime-era shift; earlier pennies had been struck in a higher-copper composition, and the change reflected both wartime metal pressures and London's broader rationalisation of colonial monetary supplies.

KM#19 spans George VI's accession through nearly the end of his reign, with striking shared across the Royal Mint and Heaton's Birmingham facility depending on the year.