...at least this is what you can find online about...but a nice book about these kind of cars reports: "2 sponsors, Boutique Junior de Langres and the Auto School Bablon plus an Echappement sticker are the only clues..." and about the Jonez "Built a Barquette in 1969 with a R16TS engine in Nevers" but you said it's Alfa engined and it seems younger.