Hi. I think I've got a Centurion, too.
The serial number is N4S5293, so late 1984 manufacture and probably a 1985 model.
Else, I don't have much to go by as I got it as a bare frame repainted black w/o fork.
I've seen the 1984 catalog somewhere and it's not in there. Mine already has the pump peg behind the head tube as it shows up on examples from 1985 on.
Unfortunately, I can't seem to find a 1985 catalog. And I can't match it to any of the 1985 examples that I find around.
A couple of frame/ design specs could help to ID if someone recognises them.
First, no eyelets for fenders/racks.
Second, fluted (concave) seat stay caps.
Third, It's a 56 cm frame weighing 2,225g but about a 100g could be the 'extra' paint in it's current state. Could be Champion #1 or #2, not sure for that matter.
Any clues?
Cheers