“They had computer word processors with modern typesetting functions and fonts back in 1961? Dang! Who knew!!?!!?”
The letterhead was not done with a “typewriter”. They’ve done fancy letterheads for hundreds of years.
You are answering two people. They used to get letterhead printed at a printers and then typed in blanks with the typewriter. They were still doing that in early nineties.
Doubt this is real.
That is the correct font of a typewriter on caps. Also, there is no kerning. It looks like the writing is consistent and the letterhead says British Protectorate of Kenya, not just Kenya like the fake.