Many different importers sold Zoli made Zouaves, but they were usually plainly marked.
SILE imported Zouaves made by Ransom Italia, a company that seems to have ceased to exist. Again, they were plainly marked.
Armi San Paolo made Zouaves, and their makers mark is a circle with DGG stamped in it, or sometimes, just a D, followed by two Gs, one on top of the other.
Armisport made them as well, and their mark is a circle with AC stamped in it.
The mark Petersoli uses is a circle with DP stamped in it.
Uberti's mark looks like the muzzle of an octagon barrel, with a U stamped in it.
Look it over, there will be a makers mark on it somewhere.