And when you maintain:
That form is from the Colony of Kenya, and mailed to the United Kingdom (Great Britain).
You are making an assumption because NON ONE knows where that document came from. I posted two links to FR posts from 2009 which appear to show the document is a hoax. I suggest again that you read the posts and the comments.
However, if you have further information other than the unfounded conclusion you appear to have reached about the validity of that curious document, please feel free to share it here.
Placemark and greetings.