Well, further research didn't bring any proof that this could have been produced also by Delaunay Belleville, as the caption on my source's page suggested (and that would have been a surprise). The Delaunay Belleville facility was bought by de Rovin, another microcar, in 1948, though.
The point goes to Yves of course, I'll stick my head in the mud just after I merge this with the former VLV puzzle.