:^) They’re all Roman coins, but the Gallic Empire was one of the schismatic sub-empires that were concurrent and came and went during the Crisis of the Third Century. :^) My favorite minor emperor of that period is probably still Carausius.
His story didn’t end well.
https://www.worldhistory.org/Postumus/
So they were schiso.
I have a sudden urge t o bury coins.
For the future.