The Federation of Rhodesia and Nyasaland was formed in 1953 and in 1955 the pound became the new currency of the Federation to replace the Southern Rhodesian pound which had been circulating in all parts of the federation (Southern Rhodesia, Northern Rhodesia, and Nyasaland). The Federation broke up at the end of 1963 and the three territories reverted to being separate British colonies. In the second half of 1964, Nyasaland became independent as Malawi, Northern Rhodesia became independent as Zambia, and Southern Rhodesia declared a name change to Rhodesia. Each issued their own pounds, at par with the Rhodesia and Nyasaland pound. The Federation also issued its own coinage. In 1955 a full new set of coins were issued with the Mary Gillick obverse of the Queen and various African animals on the reverse. The denominations followed those of sterling, namely halfpennies and pennies, which had a hole in them, three pences (known as tickeys), sixpences, shillings, a two-shilling piece and a half crown. There were further full issues of all these coins in 1956 and 1957, but thereafter only pennies and half pennies were produced until some further issues of six pences in 1962 and 1963, and threepences in 1963 and 1964. The higher denomination coins, though not particularly rare, are very popular with collectors because of their attractive reverse designs. Three pences and halfpennies were struck in 1964 despite the fact the Federation ended on 31 December 1963.