This article looks at the shilling coins issued by the East African Currency Board struck at various mints between 1921 and 1952, and especially the scarce 1943 pieces struck at the Bombay mint. The existence of contemporary counterfeits of the 1943I shillings confirms that the pieces circulated and also highlights the poor state of the circulating medium at the time.
The 1943 East Africa Shilling – Gary Oddie
BNS Research Blog 
I am in possession of a 1943 East African Shilling collected in southern Tanzania in the mid 1980’s. I would like to have the opportunity to communicate with Gary Oddie about this coin and his recommendations for validating authenticity.