Mombasa was part of the state of Zanzibar until 12 December 1963 when it was ceded to be incorporated into the newly independent state of Kenya.
Fake .
The copy was made in 64. Or are you saying the content is incorrect because it would have been Zanzibar in 1961?
They would use the present status of the X Zanzibar state rather then what it was called at the time of birth.
The time reference point for this certified copy is of the date of signature, not date of birth.