It would seem from the attached that Pininfarina were allowed inside for the 1947 show.
Pininfarina debuted the original Cisitalia 202 it at the Villa d'Este Gold Cup show in Como, Italy, followed by an appearance at the 1947 Paris Motor Show. Unlike the prevailing automotive designs of the time, the 202 was composed of a flowing, single surface, in which the fenders, hood, headlights and body all flowed as one. A total of 170 largely handcrafted models were built between 1947 and 1952.
https://newatlas.com/european-design-students-cisitalia/21548/