Bradenav, I don't want to give an impression of nonchalance, so some questions: This seems to have an two-cylinder air cooled horizontal engine and seems a two-seater, maybe a trainer. Although you say the ailette is mentioned in French, it needs not to be from France (but from a French magazine?). So, how about if I exclude France, Italy and Germany?
EDIT to say that I did not see your latest edit. But it does not change anything in my post, does it?