Panhard does not build many cars like the Panhard Dynavia: a 2 door with 610 cc air-cooled 2-cylinder boxer, made in small numbers. Its designer of record is Louis Bionier.
What is underneath
Under the skin sits 610 cc air-cooled 2-cylinder boxer. Kerb weight is 650 kg. The gearbox is a 4-speed manual. The layout matters: the engine drives the front wheels, the packaging choice that gives a small car a big cabin. The wheelbase is 2120 mm. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Its place in the line
Where it sits in Panhard's history is not in doubt: the none came before it; the none followed it; it was built at France. Nearby in the Panhard catalogue sit the Panhard & Levassor M2F Break CnAM 20520 and the Panhard & Levassor 15 CV.