Bobp,
Beretta can make you crazy if you rely on the catalogs. They issue a different catalog for each market. At least they have since around WWII. Before that the only catalogs I can find are in Italian. I have a couple of European catalogs that are tri-lingual; English, German and Italian.
They will also ignore the date code and stamp the actual date on the gun occasionally. They have a code for choke, which again they will ignore when they choose.
Since this one has sling swivels, I believe Larry is correct. It was never meant for the American market.
Again, it is a nice gun.
Pete