Well, I think, you're right. I found a picture in the net, showing the surviving prototype, having a pseudo number plate like the one on the original photo, but reading SIMCA "1963". The car is part of a collection called Collection de l'Aventure Automobile à PoissY, CAAPY. The information table there says "production year 1960". As I strolled a litte bit through the net, I found two other hints. On the British Rootes-Chrysler pages, it is told, that the Project 928 from 1962 lead to the development of the Simca 1100. And Philippe B. de l'Arc names the 936 as an potential successor for the Simca 1000, what seems to make sense, if you compare the 936 to the length of a Simca 1100. Who cann tell the ultimate truth?