Hi
Your bowl falls into the category of modern art glass rather than antique glass.
I would browse around Live Auctioneers or Bidsquare and dig through other Ferro glass items that have sold. Here is one link for you:
https://www.liveauctioneers.com/search/?keyword=Ferro%20Italian%20Arts&sort=-relevance&status=archive
You might also try an auctioneer that specializes in Art Glass who may be able to help determine authenticity and value.
Good luck!