All right, I am sorry to keep bashing on this, but I still cling to the thought that this is a Scemia body. The script on the placard on the roof is obviously the Scemia logo of the period, and the name "Renault" can be seen faintly in the background, maybe on a building or wall. This does not look exactly like the bus shown in the "Ville de Paris" Renault Scemia advertisement, but I have seen in several sources that the PN was a collaboration between Renault and Scemia, with no other coach builder involved. Additionally, I have seen that Toulouse put Renault-Scemias into service in 1926, which might explain why it has detail differences from the Paris versions. I think this is a prototype or early production Renault-Scemia PN for Toulouse, not Paris, with no STCRP involvement (hence no diamond logo on the front).