Found (near the Renault model) by my air-cooled friend among various documents, ads and magazines in the attic of his late grandfather, a picture of his great-grandfather and of his grandmother, most probably taken during the 1950s:
https://photos.elmer.re/i.php?/upload/2018/03/29/20180329070939-7442b150-sm.jpg

Any idea of the make and model of this car? 479-(D or Q)-87 is a 1950-51 registration number, but the car looks more like one from the 1930s, and the French registration system changed in 1950...