"One (possible) interesting point I discovered (as I spent a few minutes googling 'hercules and two lions' (assuming those are lions), is that the Andalusian Coat of Arms depicts Hercules with two lions.
Seville (Andalusia Spain) has a rather famous statue of Hercules and two lions (Hercules is the mythical founder of [Seville]).
It may very well point to an origin of the original sword (used for all these reproductions) in Spain (Seville/Andalusian region specifically) versus Naples/Italy."
This was news to me, and potentially significant. I know that a lot of people (myself included) having been dredging through whatever information we can find online to try to identify an "original" Roman sword from or in the Naples/Pompeii region of Italy, with no success. Maybe we've been digging in the wrong spot. Could the swords be Spanish rather than Italian?
The first image shown below is a statue in Seville, Spain (image source). The second is a statue in Rondo, Spain (image source). Here's another statue in Seville of Hercules with two lions.