Can you tell us the source of this photograph, along with any text and date, as that may help to identify the project
The link tells us a lot, except perhaps whether this was an independent project of Celestino Rosatelli, part of his work for Fiat, or a project for the Poletecnico di Torino:
I yield to your expertise."I found a picture of an apparently identical model in the Guidonia hydrodynamics test pool, attached to the well-known “high speed rig,”