its the one that says "Pietro Beretta Gardone V.T. - Made in Italy"

Calibri  Suggeriti da TwisTtheTwiTcH 

I saved the image and tried different fonts till I found the one that fits. I believe the font you're looking for is "Calibri" its Foundry is Microsoft Corporation. If you have access to Microsoft Word, then you should have it.

Hope this helped.
-TwisT