Retractatop Convertible Saloon by J. Ingram, working with Harwood Motors
Wow, how on earth did you manage to find that, as I took this (some time ago) from an old Rolls-Royce Enthusiasts Club magazine, and could find no mention of John Ingram or his patented Retractatop saloon anywhere on line!
Traditionally, the Puzzles I place from print sources (most of mine) last at least twice as long here on AP as those taken from digital sources. I try and avoid the latter when possible as in the past we all know that sadly some more dubious AP Members have obviously used on-line image search tools to solve a Puzzle, which rather defeats the whole point of this exceptional website for automotive enthusiasts with good car knowledge.
Anyway, very well found, and a deserved point to you.