The Central Bank of Nigeria, incorporated in 1958, was involved in a dispute over a $14 million irrevocable letter of credit for cement imports that were delayed due to government over-ordering, leading to claims of demurrage. The court ruled that the Bank, as an arm of the government, was immune from suit based on sovereign immunity doctrine, which distinguishes between governmental and commercial activities. However, it argued that the purchase of cement constituted a commercial transaction, challenging the application of sovereign immunity to commercial acts.