
It's a technical sales brochure created by AP to promote their 'Manual and Automatic Transmission' and sent to garages/dealers.
Date-wise I would say it's from 1966 as it shows AP as recipients of the Queen's Award for Industry in 1966 and there's a sticker inside the back cover - "Stop Press! AP Automatic Transmission is now available on the BMC 1300 series motor cars" which was around the same time (I think).
It's only 14 pages long so the technical information is not at the same level as some of the manuals I've seen but it does make an interesting and informative read. And there's lots of pictures!
If anyone's interested in a copy I could probably scan it and produce a PDF when I have a few minutes.
Paul