The trademark on mine is a pigeon sitting on a branch. The barrels are stamped "acciaio witten" perpendicular to the bore, across the tops near the breach. The site plane is stamped "daino". The left barrel is stamped "ditta u. gitti & g. gardone, v.t."
Not much help for you, I know. But the provisional proof mark on yours makes it a Gardone gun - and that's about all I can tell you with reasonable certainty.
Here's a snippit from another forum that I found while researching mine:
A Lot of Shotguns were made in small, individual lots, by families working together, each supplier contributing various parts, etc to be assembled into a complete Gun. The Final "maker" usually placed their name on the gun; Very few families made a gun from all the raw materials right through to the finished article, but of course the bigger "industrial" makers do so.( Beretta, Bettinsoli, Pedrazzi etc, etc).
These "family" or "artisan" makes supplied the general Italian shotgun market for over a century, and they were also exported by "co-operatives" specifically formed to market the guns out of Italy.
