I would think that yours is perhaps a bit later gun with that full uncapped pistol grip. Mine has a Prince of Wales grip and shows lots of wear from more than 50 years of use.
Condition looks lovely.
The proofs on barrel flats and barrels ahead of the flats, and on action water table will tell you more. http://www.shotguns.se/html/italy.html

Ooh , HAMMERS!!
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