In 1895 the IBEAC handed the colony to the British crown as it was close to bankruptcy. The British East African Protectorate was established with a copper Pice minted in 1891. In 1904 the Rupee was decimalised into 100 Cents and the coins bore the inscription East Africa & Uganda Protectorates. This currency brought the first aluminium coin in history: a 1906 half cent.
Because of the rising silver prices around WW1, the Rupee appreciated versus the Pound which was on the gold standard. Because of this, the East African Rupee was replaced by the Florin at par in 1920, only to be replaced by the Shilling in 1922 at a rate of 2 Shillings per Florin. This East African Shilling was equal to a British homeland Shilling. It is one of the few currencies that have coins with a legend of King Edwars VIII, who abdicated a few months after succeeding George V because he wished to marry a divorced American woman.
The East African Shilling was used in Uganda, Kenya and Tanganyika from 1922. In 1936 Zanzibar joined and from 1941 the British also introduced it in Ethiopia and Somalia at a rate of 24 Lire per Shilling after conquering these territories from Italy during WW2. After the war the East African Shilling was even used in Aden Protectorate in present-day Yemen.

After Kenyan, Ugandan and Tanganyikan independence in 1961-3 the East African Shilling remained the currency, until each of these new countries introduced their own Shillings from 1966.
Somalia based its Shilling on the East African Shilling after the Italians had briefly established the Somalo. Ethiopia introduced the Birr for 2 Shillings, and the South Arabian Federation replaced the Shilling with the Dinar which was worth 20 Shillings.
There are plans to unite Uganda, Kenya, Tanzania, Rwanda & Burundi into the East African Federation, proposing a new East African Shilling as its new currency. Perhaps seeing the challenges the Eurozone is facing at the moment these plans are still just plans.
Mombasa:
https://en.numista.com/catalogue/mombasa-1.html
East Africa
https://en.numista.com/catalogue/afrique_de_l_est-1.html












