I think the obverse legend probably ends AVG, which indeed wouldn't help very much. Though if so it's not a 5th century font for that V...
...if anything, it's a 3rd/early 4th century font, though that period had very different faces.
I can't make any sense of the reverse, though I think it could be consistent with a Fel Temp fallen horseman if we rotate it about 40ish degrees clockwise.