I would have thought that someone would have taken a stab at this one by now, particularly as I left a clue in the image which I posted and pictures of this aircraft are on wikipedia .....
I doubt that I will surprise anyone when I say that this aeroplane is French. It dates from 1929 and participated in that year's International Tourist Challenge. Its designer/manufacturer was active in the aviation industry, producing both powered machines and gliders, from the early 1920s to the late 1950s, his name usually being conjugated with that of whoever was then his business partner.