Here's some good poop for you rifleboy.

Your gun should have a lot info on thethe barrel near the breech.

For example, onmine the top of the barrel is marked NAVY ARMS CO.
The right side is marked Made In Italy.
The left side is marked .58 CALIBER XX, then there's a shield with someting in it that I can't make out, with a five pointed star inside of a sunburst-like symbol over the shield. Then there's PN with the star/sunburst on top. Then there's FINITO with the star/sunburst on top.
On a second line, there's F.A.R.A. 2048.

I did a little research and found a web site thatmatches Italian gun proofmarks to the year of proof. It'shttp://www.berettaweb.com/DL1.htm . The "XX" after the caliber marking says mine was made in 1964.
Found another web site that identifies Tradenames and Brands of Guns and Gunsmakers for3450gun manufacturers. http://www.earmi.it/armi/database/brand_a.htm (Use the alphabetical tabs at the top of the page). The "FARA" on mybarrel means it was made by Giuseppe Zoli.

If yours was made by Zoli, it's worth what cayugad says for sure - just check the North-South Skirmish Association web site. But if you shoot it with patched round balls, and like shooting, you'll never let it go.