It appears that the "Aerodinamica" version of the Aprilia was built from 1936-8.
One last quote:
"Pininfarina built both saloons and cabriolets on this longer chassis for Lancia, as well as the 'Aerodinamica' two seat coupes. Other coachbuilders who produced Aprilia-based cars included Ghia, Stabilimenti, Farina, Zagato, Viotti, Bertone, Vignale, Touring, Castagnia and a variety of overseas companies."