This ship to me is from the Babylon 5 universe from the Earth Alliance fleet
don't really add history to it other than it is after the addition of gravity
generators that don't require spinning sections.
Quoting Archon Mitchell
It certainly could be something from a later era in the B5 Universe although it seems to have a bit of a Narn feel to it.
you know i haven't looked at this for a while and thinking about it as a narn ship is see what you mea.n when i think about what the narn ships in season 1 episode 2 look like i think you could be right :)