Hi A30,
Many thanks for your continued input, not writing a book or article. Trying to ID a photo that belongs to a pal of mine, shows a crashed Littoria S.73. (alas do not have the photo to post of the thread).
Looks to be a belly landing in the desert, following an engine problem, location possibly Egypt circa 1938. Trying to find a likely candidate!
Your links to the Italian registers very handy, thanks once again.
Cheers, P.