Here's the entire list of all of the modern Italian gunsmithing outfits, and the maker should be listed there. But which one?
http://www.earmi.it/armi/database/armieri.htm
Only one maker has a last name with the initial "A", and the first name with the initial "V".
There are several gunsmiths with the last name "Ameria" listed, and one of them is name "Victoria".
There's one maker with the opposite initials, and a one word outfit with the first letter "A", but no letter "V" to correlate it to.
If asked, I would guess that the maker's mark stands for Victoria Amerias, but that's purely speculative.
About 40% of the way down the list, this name appears as "Armeria Victoria" in the following order of names:
SIACE di Angelo Boniotti Gardone VT 1958
Bernardelli Leonida
Gagliaresi Sergio
Galesi Luciano
Armeria Victoria