I've run Identifont to the core and still can't find a close match. This is from a book printed in England (London) by Lowe and Brydone from between 1973 and 1983 (it's an old library book, but likely it's actually 1973).
I can't seem to find this anywhere. Tapered J going below the baseline, R with a tapered leg, P with a gap, serif-less 4. The paper absorbed quite a bit of ink it seems so hard to read the finer details (like the serif and spur of the G). I have the book so if you need any particular glyph, let me know.
Any pointers appreciated.