I have inherited my father's watch which he wore every day, until long after his retirement.
It clearly has the FIAT logo as a maker's mark, with its stretched letters and curved A.
As he was in Italy with the RAF during WW2, I suspect he acquired it then as he didn't travel overseas after that.
I'm interested to learn more about this watch if anyone has any knowledge of these FIAT watches.
PS I tried to add a pic but 'insert Image' doesn't appear to like Dropbox URLs, so here's the link to the pic - Fiat watch