Alitalia Douglas DC-6 and Franco Cristaldi with his secretary Paola Quagliero, a roman born ca 1940.<a rel="nofollow" class="external autonumber" href="https://ricerca.repubblica.it/repubblica/archivio/repubblica/2019/03/12/paola-quagliero-la-mia-dolce-vita-nel-grande-cinema-cristaldiMilano13.html">[1]</a> So, this is estimated to be in 1960.
Unknown photographer
1960-05-05
<a rel="nofollow" class="external autonumber" href="https://www.informazionesenzafiltro.it/wp-content/uploads/2019/09/quagliero_cristaldi.jpg">[2]</a>