The successor of the State Bank of Ethiopia https://en.numista.com/catalogue/issuing_entity.php?id=5876 is mentioned in its description, but the predecessor is missing.
The State Bank of Ethiopia was divided in 1963 in two entities: the National Bank of Ethiopia and the Commercial Bank of Ethiopia.
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The Bank of Ethiopia became in 1943 the State Bank of Ethiopia, Central Bank of the country. It was divided in 1963 in two entities: the National Bank of Ethiopia and the Commercial Bank of Ethiopia.
I added this to the Spanish side.