The biggest problem with the Kenyan document is the ‘4s. 6d.’ (4 shillings and 6 pence) in the top left-hand corner. However, as a discussion on the other thread pointed out, Kenya uses (and used) cents not pence. Unless there is an explanation for this then, regardless of the status of the Bomford certificate, the Kenyan document must be a forgery and remains ‘out of action’.It's 7s 6d. I've found books printed in England with the price on the front page. Put 7s 6d in Google.
Possibly printed in England or by an English firm in Kenya. Don't worry your little self.